CVE-2024-44987 (GCVE-0-2024-44987)

Vulnerability from cvelistv5 – Published: 2024-09-04 19:54 – Updated: 2026-05-12 11:57
VLAI
Title
ipv6: prevent UAF in ip6_send_skb()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent UAF in ip6_send_skb() syzbot reported an UAF in ip6_send_skb() [1] After ip6_local_out() has returned, we no longer can safely dereference rt, unless we hold rcu_read_lock(). A similar issue has been fixed in commit a688caa34beb ("ipv6: take rcu lock in rawv6_send_hdrinc()") Another potential issue in ip6_finish_output2() is handled in a separate patch. [1] BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 Read of size 8 at addr ffff88806dde4858 by task syz.1.380/6530 CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588 rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 sock_write_iter+0x2dd/0x400 net/socket.c:1160 do_iter_readv_writev+0x60a/0x890 vfs_writev+0x37c/0xbb0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f936bf79e79 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8 </TASK> Allocated by task 6530: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3988 [inline] slab_alloc_node mm/slub.c:4037 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044 dst_alloc+0x12b/0x190 net/core/dst.c:89 ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670 make_blackhole net/xfrm/xfrm_policy.c:3120 [inline] xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313 ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257 rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 45: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4548 dst_destroy+0x2ac/0x460 net/core/dst.c:124 rcu_do_batch kernel/rcu/tree.c:2569 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree. ---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < 571567e0277008459750f0728f246086b2659429 (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8 (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < 24e93695b1239fbe4c31e224372be77f82dab69a (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < 9a3e55afa95ed4ac9eda112d4f918af645d72f25 (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011 (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < e44bd76dd072756e674f45c5be00153f4ded68b2 (git)
Affected: 0625491493d9000e4556bf566d205c28c8e7dc4e , < faa389b2fbaaec7fd27a390b4896139f9da662e3 (git)
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Linux Linux Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 4.19.321 , ≤ 4.19.* (semver)
Unaffected: 5.4.283 , ≤ 5.4.* (semver)
Unaffected: 5.10.225 , ≤ 5.10.* (semver)
Unaffected: 5.15.166 , ≤ 5.15.* (semver)
Unaffected: 6.1.107 , ≤ 6.1.* (semver)
Unaffected: 6.6.48 , ≤ 6.6.* (semver)
Unaffected: 6.10.7 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent UAF in ip6_send_skb()\n\nsyzbot reported an UAF in ip6_send_skb() [1]\n\nAfter ip6_local_out() has returned, we no longer can safely\ndereference rt, unless we hold rcu_read_lock().\n\nA similar issue has been fixed in commit\na688caa34beb (\"ipv6: take rcu lock in rawv6_send_hdrinc()\")\n\nAnother potential issue in ip6_finish_output2() is handled in a\nseparate patch.\n\n[1]\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\n\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:93 [inline]\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\n  print_address_description mm/kasan/report.c:377 [inline]\n  print_report+0x169/0x550 mm/kasan/report.c:488\n  kasan_report+0x143/0x180 mm/kasan/report.c:601\n  ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\n  rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\n  rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\n  sock_write_iter+0x2dd/0x400 net/socket.c:1160\n do_iter_readv_writev+0x60a/0x890\n  vfs_writev+0x37c/0xbb0 fs/read_write.c:971\n  do_writev+0x1b1/0x350 fs/read_write.c:1018\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f936bf79e79\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\n \u003c/TASK\u003e\n\nAllocated by task 6530:\n  kasan_save_stack mm/kasan/common.c:47 [inline]\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n  unpoison_slab_object mm/kasan/common.c:312 [inline]\n  __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\n  slab_post_alloc_hook mm/slub.c:3988 [inline]\n  slab_alloc_node mm/slub.c:4037 [inline]\n  kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\n  dst_alloc+0x12b/0x190 net/core/dst.c:89\n  ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\n  make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\n  xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\n  ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\n  rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\n  ___sys_sendmsg net/socket.c:2651 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 45:\n  kasan_save_stack mm/kasan/common.c:47 [inline]\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n  kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\n  poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\n  __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\n  kasan_slab_free include/linux/kasan.h:184 [inline]\n  slab_free_hook mm/slub.c:2252 [inline]\n  slab_free mm/slub.c:4473 [inline]\n  kmem_cache_free+0x145/0x350 mm/slub.c:4548\n  dst_destroy+0x2ac/0x460 net/core/dst.c:124\n  rcu_do_batch kernel/rcu/tree.c:2569 [inline]\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:33:16.459Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e"
        },
        {
          "url": "https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25"
        },
        {
          "url": "https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011"
        },
        {
          "url": "https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3"
        }
      ],
      "title": "ipv6: prevent UAF in ip6_send_skb()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-44987",
    "datePublished": "2024-09-04T19:54:35.510Z",
    "dateReserved": "2024-08-21T05:34:56.671Z",
    "dateUpdated": "2026-05-12T11:57:25.163Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-44987",
      "date": "2026-06-07",
      "epss": "0.00023",
      "percentile": "0.06827"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.32\", \"versionEndExcluding\": \"4.19.321\", \"matchCriteriaId\": \"9ADDB000-FDCD-401B-AD98-165AB6788080\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.283\", \"matchCriteriaId\": \"8E6B390A-0CE6-44FC-8CD5-BE8226D6D24C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.225\", \"matchCriteriaId\": \"C57B46A9-B105-4792-8481-1870DEFB436A\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.166\", \"matchCriteriaId\": \"913ED6CD-8ACF-48AF-AA18-7880881DD402\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.107\", \"matchCriteriaId\": \"53954FF8-CB48-4302-BC4C-9DA7A88F44A2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.48\", \"matchCriteriaId\": \"9DE9201A-CE6B-4726-BABB-8265EA0F8AE4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.10.7\", \"matchCriteriaId\": \"D2AFDFD1-D95A-4EB7-843B-5E7659518B67\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"8B3CE743-2126-47A3-8B7C-822B502CF119\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"4DEB27E7-30AA-45CC-8934-B89263EF3551\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"E0005AEF-856E-47EB-BFE4-90C46899394D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"39889A68-6D34-47A6-82FC-CD0BF23D6754\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: prevent UAF in ip6_send_skb()\\n\\nsyzbot reported an UAF in ip6_send_skb() [1]\\n\\nAfter ip6_local_out() has returned, we no longer can safely\\ndereference rt, unless we hold rcu_read_lock().\\n\\nA similar issue has been fixed in commit\\na688caa34beb (\\\"ipv6: take rcu lock in rawv6_send_hdrinc()\\\")\\n\\nAnother potential issue in ip6_finish_output2() is handled in a\\nseparate patch.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\\n\\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:93 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x169/0x550 mm/kasan/report.c:488\\n  kasan_report+0x143/0x180 mm/kasan/report.c:601\\n  ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\n  rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\\n  rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  sock_write_iter+0x2dd/0x400 net/socket.c:1160\\n do_iter_readv_writev+0x60a/0x890\\n  vfs_writev+0x37c/0xbb0 fs/read_write.c:971\\n  do_writev+0x1b1/0x350 fs/read_write.c:1018\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f936bf79e79\\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\\n \u003c/TASK\u003e\\n\\nAllocated by task 6530:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  unpoison_slab_object mm/kasan/common.c:312 [inline]\\n  __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n  slab_post_alloc_hook mm/slub.c:3988 [inline]\\n  slab_alloc_node mm/slub.c:4037 [inline]\\n  kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\\n  dst_alloc+0x12b/0x190 net/core/dst.c:89\\n  ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\\n  make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\\n  xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\\n  ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\\n  rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\\n  ___sys_sendmsg net/socket.c:2651 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFreed by task 45:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n  poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\\n  __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\\n  kasan_slab_free include/linux/kasan.h:184 [inline]\\n  slab_free_hook mm/slub.c:2252 [inline]\\n  slab_free mm/slub.c:4473 [inline]\\n  kmem_cache_free+0x145/0x350 mm/slub.c:4548\\n  dst_destroy+0x2ac/0x460 net/core/dst.c:124\\n  rcu_do_batch kernel/rcu/tree.c:2569 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: evitar UAF en ip6_send_skb() syzbot inform\\u00f3 de un UAF en ip6_send_skb() [1] Despu\\u00e9s de que ip6_local_out() haya regresado, ya no podemos desreferenciar rt de forma segura, a menos que mantengamos rcu_read_lock(). Se ha solucionado un problema similar en el commit a688caa34beb (\\\"ipv6: tomar bloqueo rcu en rawv6_send_hdrinc()\\\") Otro problema potencial en ip6_finish_output2() se maneja en un parche independiente. [1] ERROR: KASAN: slab-use-after-free en ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 Lectura de tama\\u00f1o 8 en la direcci\\u00f3n ffff88806dde4858 por la tarea syz.1.380/6530 CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 No contaminado 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:93 [en l\\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 descripci\\u00f3n_direcci\\u00f3n_impresi\\u00f3n mm/kasan/report.c:377 [en l\\u00ednea] informe_impresi\\u00f3n+0x169/0x550 mm/kasan/report.c:488 informe_kasan+0x143/0x180 mm/kasan/report.c:601 ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 tramas_pendientes_de_env\\u00edo_sin_formato_v6+0x75c/0x9e0 net/ipv6/raw.c:588 env\\u00edo_sin_formato_v6+0x19c7/0x23c0 net/ipv6/raw.c:926 env\\u00edo_sin_formato_v6_nosec net/socket.c:730 [en l\\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 sock_write_iter+0x2dd/0x400 net/socket.c:1160 do_iter_readv_writev+0x60a/0x890 vfs_writev+0x37c/0xbb0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f DESCANSE EN P\\u00c9RDIDA: 0033:0x7f936bf79e79 C\\u00f3digo: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000014 RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000000246 R12: 00000000000000000 R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8  Asignado por la tarea 6530: kasan_save_stack mm/kasan/common.c:47 [en l\\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [en l\\u00ednea] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [en l\\u00ednea] slab_post_alloc_hook mm/slub.c:3988 [en l\\u00ednea] slab_alloc_node mm/slub.c:4037 [en l\\u00ednea] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044 dst_alloc+0x12b/0x190 net/core/dst.c:89 ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670 make_blackhole net/xfrm/xfrm_policy.c:3120 [en l\\u00ednea] xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313 ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257 rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898 sock_sendmsg_nosec net/socket.c:730 [en l\\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [en l\\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Liberado por la tarea 45: kasan_save_stack mm/kasan/common.c:47 [en l\\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [en l\\u00ednea] slab_free_hook mm/slub.c:2252 ---truncado---\"}]",
      "id": "CVE-2024-44987",
      "lastModified": "2024-09-05T17:53:54.687",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-09-04T20:15:07.890",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-44987\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T20:15:07.890\",\"lastModified\":\"2026-05-12T12:17:09.680\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: prevent UAF in ip6_send_skb()\\n\\nsyzbot reported an UAF in ip6_send_skb() [1]\\n\\nAfter ip6_local_out() has returned, we no longer can safely\\ndereference rt, unless we hold rcu_read_lock().\\n\\nA similar issue has been fixed in commit\\na688caa34beb (\\\"ipv6: take rcu lock in rawv6_send_hdrinc()\\\")\\n\\nAnother potential issue in ip6_finish_output2() is handled in a\\nseparate patch.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\\n\\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:93 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x169/0x550 mm/kasan/report.c:488\\n  kasan_report+0x143/0x180 mm/kasan/report.c:601\\n  ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\n  rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\\n  rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  sock_write_iter+0x2dd/0x400 net/socket.c:1160\\n do_iter_readv_writev+0x60a/0x890\\n  vfs_writev+0x37c/0xbb0 fs/read_write.c:971\\n  do_writev+0x1b1/0x350 fs/read_write.c:1018\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f936bf79e79\\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\\n \u003c/TASK\u003e\\n\\nAllocated by task 6530:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  unpoison_slab_object mm/kasan/common.c:312 [inline]\\n  __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n  slab_post_alloc_hook mm/slub.c:3988 [inline]\\n  slab_alloc_node mm/slub.c:4037 [inline]\\n  kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\\n  dst_alloc+0x12b/0x190 net/core/dst.c:89\\n  ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\\n  make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\\n  xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\\n  ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\\n  rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\\n  ___sys_sendmsg net/socket.c:2651 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFreed by task 45:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n  poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\\n  __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\\n  kasan_slab_free include/linux/kasan.h:184 [inline]\\n  slab_free_hook mm/slub.c:2252 [inline]\\n  slab_free mm/slub.c:4473 [inline]\\n  kmem_cache_free+0x145/0x350 mm/slub.c:4548\\n  dst_destroy+0x2ac/0x460 net/core/dst.c:124\\n  rcu_do_batch kernel/rcu/tree.c:2569 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: evitar UAF en ip6_send_skb() syzbot inform\u00f3 de un UAF en ip6_send_skb() [1] Despu\u00e9s de que ip6_local_out() haya regresado, ya no podemos desreferenciar rt de forma segura, a menos que mantengamos rcu_read_lock(). Se ha solucionado un problema similar en el commit a688caa34beb (\\\"ipv6: tomar bloqueo rcu en rawv6_send_hdrinc()\\\") Otro problema potencial en ip6_finish_output2() se maneja en un parche independiente. [1] ERROR: KASAN: slab-use-after-free en ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88806dde4858 por la tarea syz.1.380/6530 CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 No contaminado 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:93 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 descripci\u00f3n_direcci\u00f3n_impresi\u00f3n mm/kasan/report.c:377 [en l\u00ednea] informe_impresi\u00f3n+0x169/0x550 mm/kasan/report.c:488 informe_kasan+0x143/0x180 mm/kasan/report.c:601 ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 tramas_pendientes_de_env\u00edo_sin_formato_v6+0x75c/0x9e0 net/ipv6/raw.c:588 env\u00edo_sin_formato_v6+0x19c7/0x23c0 net/ipv6/raw.c:926 env\u00edo_sin_formato_v6_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 sock_write_iter+0x2dd/0x400 net/socket.c:1160 do_iter_readv_writev+0x60a/0x890 vfs_writev+0x37c/0xbb0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f DESCANSE EN P\u00c9RDIDA: 0033:0x7f936bf79e79 C\u00f3digo: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000014 RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000000246 R12: 00000000000000000 R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8  Asignado por la tarea 6530: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [en l\u00ednea] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [en l\u00ednea] slab_post_alloc_hook mm/slub.c:3988 [en l\u00ednea] slab_alloc_node mm/slub.c:4037 [en l\u00ednea] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044 dst_alloc+0x12b/0x190 net/core/dst.c:89 ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670 make_blackhole net/xfrm/xfrm_policy.c:3120 [en l\u00ednea] xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313 ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257 rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [en l\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Liberado por la tarea 45: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [en l\u00ednea] slab_free_hook mm/slub.c:2252 ---truncado---\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.32\",\"versionEndExcluding\":\"4.19.321\",\"matchCriteriaId\":\"9ADDB000-FDCD-401B-AD98-165AB6788080\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.283\",\"matchCriteriaId\":\"8E6B390A-0CE6-44FC-8CD5-BE8226D6D24C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.225\",\"matchCriteriaId\":\"C57B46A9-B105-4792-8481-1870DEFB436A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.166\",\"matchCriteriaId\":\"913ED6CD-8ACF-48AF-AA18-7880881DD402\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.107\",\"matchCriteriaId\":\"53954FF8-CB48-4302-BC4C-9DA7A88F44A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.48\",\"matchCriteriaId\":\"9DE9201A-CE6B-4726-BABB-8265EA0F8AE4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.7\",\"matchCriteriaId\":\"D2AFDFD1-D95A-4EB7-843B-5E7659518B67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-355557.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:14:37.598Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-44987\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-04T20:20:00.407827Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-04T20:20:02.520Z\"}}], \"cna\": {\"title\": \"ipv6: prevent UAF in ip6_send_skb()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"571567e0277008459750f0728f246086b2659429\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"24e93695b1239fbe4c31e224372be77f82dab69a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"9a3e55afa95ed4ac9eda112d4f918af645d72f25\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"e44bd76dd072756e674f45c5be00153f4ded68b2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0625491493d9000e4556bf566d205c28c8e7dc4e\", \"lessThan\": \"faa389b2fbaaec7fd27a390b4896139f9da662e3\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv6/ip6_output.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.32\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.32\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.321\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.283\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.225\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.166\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.107\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.48\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv6/ip6_output.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429\"}, {\"url\": \"https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8\"}, {\"url\": \"https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e\"}, {\"url\": \"https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a\"}, {\"url\": \"https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25\"}, {\"url\": \"https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011\"}, {\"url\": \"https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2\"}, {\"url\": \"https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: prevent UAF in ip6_send_skb()\\n\\nsyzbot reported an UAF in ip6_send_skb() [1]\\n\\nAfter ip6_local_out() has returned, we no longer can safely\\ndereference rt, unless we hold rcu_read_lock().\\n\\nA similar issue has been fixed in commit\\na688caa34beb (\\\"ipv6: take rcu lock in rawv6_send_hdrinc()\\\")\\n\\nAnother potential issue in ip6_finish_output2() is handled in a\\nseparate patch.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\\n\\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:93 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x169/0x550 mm/kasan/report.c:488\\n  kasan_report+0x143/0x180 mm/kasan/report.c:601\\n  ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\n  rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\\n  rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  sock_write_iter+0x2dd/0x400 net/socket.c:1160\\n do_iter_readv_writev+0x60a/0x890\\n  vfs_writev+0x37c/0xbb0 fs/read_write.c:971\\n  do_writev+0x1b1/0x350 fs/read_write.c:1018\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f936bf79e79\\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\\n \u003c/TASK\u003e\\n\\nAllocated by task 6530:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  unpoison_slab_object mm/kasan/common.c:312 [inline]\\n  __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n  slab_post_alloc_hook mm/slub.c:3988 [inline]\\n  slab_alloc_node mm/slub.c:4037 [inline]\\n  kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\\n  dst_alloc+0x12b/0x190 net/core/dst.c:89\\n  ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\\n  make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\\n  xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\\n  ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\\n  rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\\n  ___sys_sendmsg net/socket.c:2651 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFreed by task 45:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n  poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\\n  __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\\n  kasan_slab_free include/linux/kasan.h:184 [inline]\\n  slab_free_hook mm/slub.c:2252 [inline]\\n  slab_free mm/slub.c:4473 [inline]\\n  kmem_cache_free+0x145/0x350 mm/slub.c:4548\\n  dst_destroy+0x2ac/0x460 net/core/dst.c:124\\n  rcu_do_batch kernel/rcu/tree.c:2569 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.321\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.283\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.225\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.166\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.107\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.48\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.7\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"2.6.32\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:33:16.459Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-44987\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:33:16.459Z\", \"dateReserved\": \"2024-08-21T05:34:56.671Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-04T19:54:35.510Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.