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CVE-2024-50035 (GCVE-0-2024-50035)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-05-12 11:59
VLAI
Title
ppp: fix ppp_async_encode() illegal access
Summary
In the Linux kernel, the following vulnerability has been resolved: ppp: fix ppp_async_encode() illegal access syzbot reported an issue in ppp_async_encode() [1] In this case, pppoe_sendmsg() is called with a zero size. Then ppp_async_encode() is called with an empty skb. BUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4092 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:25 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4151ec65abd755133ebec687218fadd2d2631167 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8dfe93901b410ae41264087427f3b9f389388f83 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 30d91a478d58cbae3dbaa8224d17d0d839f0d71b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fadf8fdb3110d3138e05c3765f645535434f8d76 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ce249a4c68d0ce27a8c5d853338d502e2711a314 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8fe992ff3df493d1949922ca234419f3ede08dff (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c007a14797240607038bd3464501109f408940e2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 40dddd4b8bd08a69471efd96107a4e1c73fabefc (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
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    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.12\", \"versionEndExcluding\": \"5.10.227\", \"matchCriteriaId\": \"E346E1F4-278B-4263-B0B8-7234D7CC31E4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.168\", \"matchCriteriaId\": \"4D51C05D-455B-4D8D-89E7-A58E140B864C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.113\", \"matchCriteriaId\": \"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.57\", \"matchCriteriaId\": \"05D83DB8-7465-4F88-AFB2-980011992AC1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.11.4\", \"matchCriteriaId\": \"AA84D336-CE9A-4535-B901-1AD77EC17C34\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7F361E1D-580F-4A2D-A509-7615F73167A1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nppp: fix ppp_async_encode() illegal access\\n\\nsyzbot reported an issue in ppp_async_encode() [1]\\n\\nIn this case, pppoe_sendmsg() is called with a zero size.\\nThen ppp_async_encode() is called with an empty skb.\\n\\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4092 [inline]\\n  slab_alloc_node mm/slub.c:4135 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ppp: se corrige el acceso ilegal a ppp_async_encode() syzbot inform\\u00f3 un problema en ppp_async_encode() [1] En este caso, se llama a pppoe_sendmsg() con un tama\\u00f1o cero. Luego, se llama a ppp_async_encode() con un skb vac\\u00edo. ERROR: KMSAN: valor no inicializado en ppp_async_encode drivers/net/ppp/ppp_async.c:545 [en l\\u00ednea] ERROR: KMSAN: valor no inicializado en ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [en l\\u00ednea] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [en l\\u00ednea] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [en l\\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\\u00ednea] __se_sys_sendmmsg red/socket.c:2768 [en l\\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 red/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\\u00f3 en: slab_post_alloc_hook mm/slub.c:4092 [en l\\u00ednea] slab_alloc_node mm/slub.c:4135 [en l\\u00ednea] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 red/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [en l\\u00ednea] sock_wmalloc+0xfe/0x1a0 red/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec red/socket.c:729 [en l\\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\\u00ednea] __se_sys_sendmmsg red/socket.c:2768 [en l\\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 red/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 No contaminado 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024\"}]",
      "id": "CVE-2024-50035",
      "lastModified": "2024-11-08T16:15:42.777",
      "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:N/A:H\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.2}]}",
      "published": "2024-10-21T20:15:16.640",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/30d91a478d58cbae3dbaa8224d17d0d839f0d71b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/40dddd4b8bd08a69471efd96107a4e1c73fabefc\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/4151ec65abd755133ebec687218fadd2d2631167\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/8dfe93901b410ae41264087427f3b9f389388f83\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/8fe992ff3df493d1949922ca234419f3ede08dff\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c007a14797240607038bd3464501109f408940e2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ce249a4c68d0ce27a8c5d853338d502e2711a314\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/fadf8fdb3110d3138e05c3765f645535434f8d76\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-908\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:16:40.000Z",
      "cve": "CVE-2024-50035",
      "id": "msrc_CVE-2024-50035",
      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ppp: fix ppp_async_encode() illegal access",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50035.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50035\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T20:15:16.640\",\"lastModified\":\"2026-06-17T08:03:25.580\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nppp: fix ppp_async_encode() illegal access\\n\\nsyzbot reported an issue in ppp_async_encode() [1]\\n\\nIn this case, pppoe_sendmsg() is called with a zero size.\\nThen ppp_async_encode() is called with an empty skb.\\n\\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4092 [inline]\\n  slab_alloc_node mm/slub.c:4135 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ppp: se corrige el acceso ilegal a ppp_async_encode() syzbot inform\u00f3 un problema en ppp_async_encode() [1] En este caso, se llama a pppoe_sendmsg() con un tama\u00f1o cero. Luego, se llama a ppp_async_encode() con un skb vac\u00edo. ERROR: KMSAN: valor no inicializado en ppp_async_encode drivers/net/ppp/ppp_async.c:545 [en l\u00ednea] ERROR: KMSAN: valor no inicializado en ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [en l\u00ednea] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [en l\u00ednea] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [en l\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\u00ednea] __se_sys_sendmmsg red/socket.c:2768 [en l\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 red/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slub.c:4092 [en l\u00ednea] slab_alloc_node mm/slub.c:4135 [en l\u00ednea] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 red/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [en l\u00ednea] sock_wmalloc+0xfe/0x1a0 red/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec red/socket.c:729 [en l\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\u00ednea] __se_sys_sendmmsg red/socket.c:2768 [en l\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 red/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 No contaminado 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 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    "redhat_vex": {
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      "initial_release_date": "2024-10-21T00:00:00+00:00",
      "product_status:fixed": "305",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50035.json",
      "version": "3"
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      "product_status:known_not_affected": "32",
      "product_status:recommended": "721",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50035",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50035.json",
      "version": "77"
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\"https://git.kernel.org/stable/c/40dddd4b8bd08a69471efd96107a4e1c73fabefc\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nppp: fix ppp_async_encode() illegal access\\n\\nsyzbot reported an issue in ppp_async_encode() [1]\\n\\nIn this case, pppoe_sendmsg() is called with a zero size.\\nThen ppp_async_encode() is called with an empty skb.\\n\\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4092 [inline]\\n  slab_alloc_node mm/slub.c:4135 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.57\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.4\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:44:14.079Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50035\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:59:50.600Z\", \"dateReserved\": \"2024-10-21T12:17:06.070Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T19:39:36.460Z\", \"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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.