CVE-2024-26852 (GCVE-0-2024-26852)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:17 – Updated: 2026-05-12 11:49
VLAI
Title
net/ipv6: avoid possible UAF in ip6_route_mpath_notify()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6_route_mpath_notify() syzbot found another use-after-free in ip6_route_mpath_notify() [1] Commit f7225172f25a ("net/ipv6: prevent use after free in ip6_route_mpath_notify") was not able to fix the root cause. We need to defer the fib6_info_release() calls after ip6_route_mpath_notify(), in the cleanup phase. [1] BUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0 Read of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037 CPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report.c:601 rt6_fill_node+0x1460/0x1ac0 inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184 ip6_route_mpath_notify net/ipv6/route.c:5198 [inline] ip6_route_multipath_add net/ipv6/route.c:5404 [inline] inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f73dd87dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858 </TASK> Allocated by task 23037: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc+0x22e/0x490 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758 ip6_route_multipath_add net/ipv6/route.c:5298 [inline] inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 16: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 m ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 31ea5bcc7d4cd1423de6be327a2c034725704136 (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 664f9c647260cc9d68b4e31d9899530d89dd045e (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 79ce2e54cc0ae366f45516c00bf1b19aa43e9abe (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < cae3303257950d03ffec2df4a45e836f10d26c24 (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 394334fe2ae3b9f1e2332b873857e84cb28aac18 (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < ed883060c38721ed828061f6c0c30e5147326c9a (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda (git)
Affected: 3b1137fe74829e021f483756a648cbb87c8a1b4a , < 685f7d531264599b3f167f1e94bbd22f120e5fab (git)
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Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 4.19.310 , ≤ 4.19.* (semver)
Unaffected: 5.4.272 , ≤ 5.4.* (semver)
Unaffected: 5.10.213 , ≤ 5.10.* (semver)
Unaffected: 5.15.152 , ≤ 5.15.* (semver)
Unaffected: 6.1.82 , ≤ 6.1.* (semver)
Unaffected: 6.6.22 , ≤ 6.6.* (semver)
Unaffected: 6.7.10 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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linux linux_kernel Affected: 3b1137fe7482 , < 31ea5bcc7d4c (custom)
Affected: 3b1137fe7482 , < 664f9c647260 (custom)
Affected: 3b1137fe7482 , < 79ce2e54cc0a (custom)
Affected: 3b1137fe7482 , < cae330325795 (custom)
Affected: 3b1137fe7482 , < 394334fe2ae3 (custom)
Affected: 3b1137fe7482 , < ed883060c387 (custom)
Affected: 3b1137fe7482 , < 61b34f73cdbd (custom)
Affected: 3b1137fe7482 , < 685f7d531264 (custom)
Affected: 4.11
Unaffected: 0 , < 4.11 (custom)
Unaffected: 4.19.310 , ≤ 4.20 (custom)
Unaffected: 5.4.272 , ≤ 5.5 (custom)
Unaffected: 5.10.213 , ≤ 5.11 (custom)
Unaffected: 5.15.152 , ≤ 5.16 (custom)
Unaffected: 6.1.82 , ≤ 6.2 (custom)
Unaffected: 6.6.22 , ≤ 6.7 (custom)
Unaffected: 6.7.10 , ≤ 6.8 (custom)
Unaffected: 6.8 , ≤ * (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\n\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\n\nCommit f7225172f25a (\"net/ipv6: prevent use after free in\nip6_route_mpath_notify\") was not able to fix the root cause.\n\nWe need to defer the fib6_info_release() calls after\nip6_route_mpath_notify(), in the cleanup phase.\n\n[1]\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\n\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  print_address_description mm/kasan/report.c:377 [inline]\n  print_report+0x167/0x540 mm/kasan/report.c:488\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\n rt6_fill_node+0x1460/0x1ac0\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f73dd87dda9\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\n \u003c/TASK\u003e\n\nAllocated by task 23037:\n  kasan_save_stack mm/kasan/common.c:47 [inline]\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\n  __do_kmalloc_node mm/slub.c:3981 [inline]\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\n  kmalloc include/linux/slab.h:594 [inline]\n  kzalloc include/linux/slab.h:711 [inline]\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\n\nFreed by task 16:\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+0x4e/0x60 mm/kasan/generic.c:640\n  poison_slab_object+0xa6/0xe0 m\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:05:22.366Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136"
        },
        {
          "url": "https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e"
        },
        {
          "url": "https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe"
        },
        {
          "url": "https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24"
        },
        {
          "url": "https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda"
        },
        {
          "url": "https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab"
        }
      ],
      "title": "net/ipv6: avoid possible UAF in ip6_route_mpath_notify()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26852",
    "datePublished": "2024-04-17T10:17:15.923Z",
    "dateReserved": "2024-02-19T14:20:24.183Z",
    "dateUpdated": "2026-05-12T11:49:33.817Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-26852",
      "date": "2026-06-08",
      "epss": "0.00012",
      "percentile": "0.01699"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\\n\\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\\n\\nCommit f7225172f25a (\\\"net/ipv6: prevent use after free in\\nip6_route_mpath_notify\\\") was not able to fix the root cause.\\n\\nWe need to defer the fib6_info_release() calls after\\nip6_route_mpath_notify(), in the cleanup phase.\\n\\n[1]\\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\\n\\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x167/0x540 mm/kasan/report.c:488\\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\\n rt6_fill_node+0x1460/0x1ac0\\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\nRIP: 0033:0x7f73dd87dda9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\\n \u003c/TASK\u003e\\n\\nAllocated by task 23037:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\\n  __do_kmalloc_node mm/slub.c:3981 [inline]\\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\\n  kmalloc include/linux/slab.h:594 [inline]\\n  kzalloc include/linux/slab.h:711 [inline]\\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n\\nFreed by task 16:\\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+0x4e/0x60 mm/kasan/generic.c:640\\n  poison_slab_object+0xa6/0xe0 m\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net/ipv6: evita posible UAF en ip6_route_mpath_notify() syzbot encontr\\u00f3 otro use-after-free en ip6_route_mpath_notify() [1] Commit f7225172f25a (\\\"net/ipv6: previene el use-after-free in ip6_route_mpath_notify\\\") no pudo solucionar la causa ra\\u00edz. Necesitamos diferir las llamadas a fib6_info_release() despu\\u00e9s de ip6_route_mpath_notify(), en la fase de limpieza. [1] ERROR: KASAN: slab-use-after-free en rt6_fill_node+0x1460/0x1ac0 Lectura de tama\\u00f1o 4 en la direcci\\u00f3n ffff88809a07fc64 mediante la tarea syz-executor.2/23037 CPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 25/01/2024 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\\u00ednea] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [en l\\u00ednea] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report. c:601 rt6_fill_node+0x1460/0x1ac0 inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184 ip6_route_mpath_notify net/ipv6/route.c:5198 [en l\\u00ednea] ip6_route_multipath_add net/ipv6/route.c:5404 et6_rtm_nuevaruta+ 0x1d0f/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1 341 [en l\\u00ednea] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [en l\\u00ednea] __sock_sendmsg+0x221/0x270 net/socket .c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entrada_SYSC ALL_64_after_hwframe+0x6f/0x77 RIP : 0033:0x7f73dd87dda9 C\\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 24 08 0f 05 \u0026lt;48 \u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: de RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858  Asignado por tarea 23037: kasan_save_stack mm/kasan/common.c:47 [en l\\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 veneno_kmalloc_redzone mm/kasan/common.c:372 [en l\\u00ednea] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h: 211 [en l\\u00ednea] __do_kmalloc_node mm/slub.c:3981 [en l\\u00ednea] __kmalloc+0x22e/0x490 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [en l\\u00ednea] kzalloc include/linux/slab.h:711 [en l\\u00ednea] fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758 ip6_route_multipath_add net/ipv6/route.c:5298 [inet6_rtm_newroute+0x74 4/0x2300 neto /ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [en l\\u00ednea] netlink_unicast +0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [en l\\u00ednea] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entrada_SYSCALL_64_after_ hwframe+0x6f/0x77 Liberado por la tarea 16: 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+0x4e/0x60 mm/kasan/generic.c:640 veneno_slab_object+0xa6/0xe0 m --- truncado---\"}]",
      "id": "CVE-2024-26852",
      "lastModified": "2024-11-21T09:03:12.853",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"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": "2024-04-17T11:15:08.530",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26852\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:08.530\",\"lastModified\":\"2026-05-12T12:16:21.053\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\\n\\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\\n\\nCommit f7225172f25a (\\\"net/ipv6: prevent use after free in\\nip6_route_mpath_notify\\\") was not able to fix the root cause.\\n\\nWe need to defer the fib6_info_release() calls after\\nip6_route_mpath_notify(), in the cleanup phase.\\n\\n[1]\\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\\n\\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x167/0x540 mm/kasan/report.c:488\\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\\n rt6_fill_node+0x1460/0x1ac0\\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\nRIP: 0033:0x7f73dd87dda9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\\n \u003c/TASK\u003e\\n\\nAllocated by task 23037:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\\n  __do_kmalloc_node mm/slub.c:3981 [inline]\\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\\n  kmalloc include/linux/slab.h:594 [inline]\\n  kzalloc include/linux/slab.h:711 [inline]\\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n\\nFreed by task 16:\\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+0x4e/0x60 mm/kasan/generic.c:640\\n  poison_slab_object+0xa6/0xe0 m\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net/ipv6: evita posible UAF en ip6_route_mpath_notify() syzbot encontr\u00f3 otro use-after-free en ip6_route_mpath_notify() [1] Commit f7225172f25a (\\\"net/ipv6: previene el use-after-free in ip6_route_mpath_notify\\\") no pudo solucionar la causa ra\u00edz. Necesitamos diferir las llamadas a fib6_info_release() despu\u00e9s de ip6_route_mpath_notify(), en la fase de limpieza. [1] ERROR: KASAN: slab-use-after-free en rt6_fill_node+0x1460/0x1ac0 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff88809a07fc64 mediante la tarea syz-executor.2/23037 CPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 25/01/2024 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report. c:601 rt6_fill_node+0x1460/0x1ac0 inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184 ip6_route_mpath_notify net/ipv6/route.c:5198 [en l\u00ednea] ip6_route_multipath_add net/ipv6/route.c:5404 et6_rtm_nuevaruta+ 0x1d0f/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1 341 [en l\u00ednea] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x221/0x270 net/socket .c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entrada_SYSC ALL_64_after_hwframe+0x6f/0x77 RIP : 0033:0x7f73dd87dda9 C\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 24 08 0f 05 \u0026lt;48 \u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: de RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858  Asignado por tarea 23037: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 veneno_kmalloc_redzone mm/kasan/common.c:372 [en l\u00ednea] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h: 211 [en l\u00ednea] __do_kmalloc_node mm/slub.c:3981 [en l\u00ednea] __kmalloc+0x22e/0x490 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [en l\u00ednea] kzalloc include/linux/slab.h:711 [en l\u00ednea] fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758 ip6_route_multipath_add net/ipv6/route.c:5298 [inet6_rtm_newroute+0x74 4/0x2300 neto /ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [en l\u00ednea] netlink_unicast +0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entrada_SYSCALL_64_after_ hwframe+0x6f/0x77 Liberado por la tarea 16: 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+0x4e/0x60 mm/kasan/generic.c:640 veneno_slab_object+0xa6/0xe0 m --- truncado---\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.11\",\"versionEndExcluding\":\"4.19.310\",\"matchCriteriaId\":\"980D4CBA-CDA0-4613-97DF-DDEF107EDC49\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.272\",\"matchCriteriaId\":\"06199E67-91F5-4EC0-828B-22825E4DBAD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.213\",\"matchCriteriaId\":\"CE7B425A-A38B-494A-AA47-EC2251748164\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.152\",\"matchCriteriaId\":\"DBBE9241-559E-479A-895A-02186BA03EBF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.82\",\"matchCriteriaId\":\"933AC628-7DAD-4B2D-82E3-3B7B331B1C09\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.22\",\"matchCriteriaId\":\"AC6FD6F8-5B16-4F53-8116-D42F4BF4FBAC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.10\",\"matchCriteriaId\":\"FB4549F9-0160-455F-8CDC-98D38AEF6D66\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B9F4EA73-0894-400F-A490-3A397AB7A517\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"056BD938-0A27-4569-B391-30578B309EE3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F02056A5-B362-4370-9FF8-6F0BD384D520\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"62075ACE-B2A0-4B16-829D-B3DA5AE5CC41\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"A780F817-2A77-4130-A9B7-5C25606314E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"AEB9199B-AB8F-4877-8964-E2BA95B5F15C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\",\"source\":\"af854a3a-2127-422b-91ae-364d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\"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\"}, {\"url\": \"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\\n\\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\\n\\nCommit f7225172f25a (\\\"net/ipv6: prevent use after free in\\nip6_route_mpath_notify\\\") was not able to fix the root cause.\\n\\nWe need to defer the fib6_info_release() calls after\\nip6_route_mpath_notify(), in the cleanup phase.\\n\\n[1]\\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\\n\\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x167/0x540 mm/kasan/report.c:488\\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\\n rt6_fill_node+0x1460/0x1ac0\\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\nRIP: 0033:0x7f73dd87dda9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\\n \u003c/TASK\u003e\\n\\nAllocated by task 23037:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\\n  __do_kmalloc_node mm/slub.c:3981 [inline]\\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\\n  kmalloc include/linux/slab.h:594 [inline]\\n  kzalloc include/linux/slab.h:711 [inline]\\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n\\nFreed by task 16:\\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+0x4e/0x60 mm/kasan/generic.c:640\\n  poison_slab_object+0xa6/0xe0 m\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.310\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.272\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.213\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.152\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.82\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.22\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.10\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"4.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:05:22.366Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26852\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:49:33.817Z\", \"dateReserved\": \"2024-02-19T14:20:24.183Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:17:15.923Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.