CVE-2024-36927 (GCVE-0-2024-36927)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:29 – Updated: 2026-05-11 20:17
VLAI?
Title
ipv4: Fix uninit-value access in __ip_make_skb()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix uninit-value access in __ip_make_skb() KMSAN reported uninit-value access in __ip_make_skb() [1]. __ip_make_skb() tests HDRINCL to know if the skb has icmphdr. However, HDRINCL can cause a race condition. If calling setsockopt(2) with IP_HDRINCL changes HDRINCL while __ip_make_skb() is running, the function will access icmphdr in the skb even if it is not included. This causes the issue reported by KMSAN. Check FLOWI_FLAG_KNOWN_NH on fl4->flowi4_flags instead of testing HDRINCL on the socket. Also, fl4->fl4_icmp_type and fl4->fl4_icmp_code are not initialized. These are union in struct flowi4 and are implicitly initialized by flowi4_init_output(), but we should not rely on specific union layout. Initialize these explicitly in raw_sendmsg(). [1] BUG: KMSAN: uninit-value in __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 ip_finish_skb include/net/ip.h:243 [inline] ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508 raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x274/0x3c0 net/socket.c:745 __sys_sendto+0x62c/0x7b0 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was created at: slab_post_alloc_hook mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577 __alloc_skb+0x35a/0x7c0 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1318 [inline] __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128 ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365 raw_sendmsg+0x22b1/0x2690 net/ipv4/raw.c:648 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x274/0x3c0 net/socket.c:745 __sys_sendto+0x62c/0x7b0 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 CPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 566785731c6dd41ef815196ddc36d1ae30a63763 , < 88c66f1879f322f11de34d37b2d3d87497afdcb6 (git)
Affected: a54ec573d9b81b05d368f8e6edc1b3e49f688658 , < 20d3eb00ab81462d554ac6d09691b8d9aa5a5741 (git)
Affected: fc60067260c20da8cddcf968bec47416f3e2cde2 , < 55bf541e018b76b3750cb6c6ea18c46e1ac5562e (git)
Affected: 99e5acae193e369b71217efe6f1dad42f3f18815 , < 5db08343ddb1b239320612036c398e4e1bb52818 (git)
Affected: 99e5acae193e369b71217efe6f1dad42f3f18815 , < f5c603ad4e6fcf42f84053e882ebe20184bb309e (git)
Affected: 99e5acae193e369b71217efe6f1dad42f3f18815 , < fc1092f51567277509563800a3c56732070b6aa4 (git)
Affected: dc4e3bb0710178c8d03fc43064e0a71fe7440cdd (git)
Affected: 022ea4374c319690c804706bda9dc42946d1556d (git)
Affected: 27c468ec1af113f6ae94fb5378f65e6038bd16e7 (git)
Affected: 32a5a13d556e4f804e5a447a08c70b172d600707 (git)
Affected: 9e3c96aed8fe32907e0a4bca05aad457629a820c (git)
Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.140 , ≤ 6.1.* (semver)
Unaffected: 6.6.31 , ≤ 6.6.* (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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          "url": "https://git.kernel.org/stable/c/88c66f1879f322f11de34d37b2d3d87497afdcb6"
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          "url": "https://git.kernel.org/stable/c/20d3eb00ab81462d554ac6d09691b8d9aa5a5741"
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    "dateUpdated": "2026-05-11T20:17:10.183Z",
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    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv4: Fix uninit-value access in __ip_make_skb()\\n\\nKMSAN reported uninit-value access in __ip_make_skb() [1].  __ip_make_skb()\\ntests HDRINCL to know if the skb has icmphdr. However, HDRINCL can cause a\\nrace condition. If calling setsockopt(2) with IP_HDRINCL changes HDRINCL\\nwhile __ip_make_skb() is running, the function will access icmphdr in the\\nskb even if it is not included. This causes the issue reported by KMSAN.\\n\\nCheck FLOWI_FLAG_KNOWN_NH on fl4-\u003eflowi4_flags instead of testing HDRINCL\\non the socket.\\n\\nAlso, fl4-\u003efl4_icmp_type and fl4-\u003efl4_icmp_code are not initialized. These\\nare union in struct flowi4 and are implicitly initialized by\\nflowi4_init_output(), but we should not rely on specific union layout.\\n\\nInitialize these explicitly in raw_sendmsg().\\n\\n[1]\\nBUG: KMSAN: uninit-value in __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n ip_finish_skb include/net/ip.h:243 [inline]\\n ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508\\n raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n slab_post_alloc_hook mm/slub.c:3804 [inline]\\n slab_alloc_node mm/slub.c:3845 [inline]\\n kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888\\n kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577\\n __alloc_skb+0x35a/0x7c0 net/core/skbuff.c:668\\n alloc_skb include/linux/skbuff.h:1318 [inline]\\n __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128\\n ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365\\n raw_sendmsg+0x22b1/0x2690 net/ipv4/raw.c:648\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nCPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: ipv4: corrigi\\u00f3 el acceso de valor uninit en __ip_make_skb() KMSAN inform\\u00f3 el acceso de valor uninit en __ip_make_skb() [1]. __ip_make_skb() prueba HDRINCL para saber si el skb tiene icmphdr. Sin embargo, HDRINCL puede provocar una condici\\u00f3n de ejecuci\\u00f3n. Si llamar a setsockopt(2) con IP_HDRINCL cambia HDRINCL mientras se ejecuta __ip_make_skb(), la funci\\u00f3n acceder\\u00e1 a icmphdr en el skb incluso si no est\\u00e1 incluido. Esto provoca el problema informado por KMSAN. Verifique FLOWI_FLAG_KNOWN_NH en fl4-\u0026gt;flowi4_flags en lugar de probar HDRINCL en el socket. Adem\\u00e1s, fl4-\u0026gt;fl4_icmp_type y fl4-\u0026gt;fl4_icmp_code no est\\u00e1n inicializados. Estas son una uni\\u00f3n en la estructura flowi4 y se inicializan impl\\u00edcitamente mediante flowi4_init_output(), pero no debemos confiar en un dise\\u00f1o de uni\\u00f3n espec\\u00edfico. Inicial\\u00edcelos expl\\u00edcitamente en raw_sendmsg(). [1] ERROR: KMSAN: valor uninit en __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 ip_finish_skb include/net/ip.h:243 [ inline] ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508 raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 net/socket.c : 730 [en l\\u00ednea] __sock_sendmsg+0x274/0x3c0 net/Socket.c: 745 __sys_sendto+0x62c/0x7b0 net/Socket.c: 2191 __do_sys_sendto net/socket.c: 2203 [en l\\u00ednea] __se_sys_sendto net/sows. ] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit se cre\\u00f3 en: slab_post_alloc_hook mm/slub.c :3804 [en l\\u00ednea] slab_alloc_node mm/slub.c:3845 [en l\\u00ednea] kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577 __alloc_skb+0x35a/0x7c0 net/core/skbuff.c: 668 alloc_skb include/linux/skbuff.h:1318 [en l\\u00ednea] __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128 ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365 raw_sendmsg+0x22b1/0x2690 net /ipv4 /raw.c:648 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [en l\\u00ednea] __sock_sendmsg+0x274/0x3c0 net/socket.c:745 __sys_sendto+0x62c/0x7b0 net / socket.c:2191 __do_sys_sendto net/socket.c:2203 [en l\\u00ednea] __se_sys_sendto net/socket.c:2199 [en l\\u00ednea] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/ent ry/ common.c:83 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 CPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25 Nombre de hardware: PC est\\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16 .3-1.fc39 01/04/2014\"}]",
      "id": "CVE-2024-36927",
      "lastModified": "2024-11-21T09:22:50.220",
      "published": "2024-05-30T16:15:15.957",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-36927\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-30T16:15:15.957\",\"lastModified\":\"2026-01-19T13:16:06.940\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv4: Fix uninit-value access in __ip_make_skb()\\n\\nKMSAN reported uninit-value access in __ip_make_skb() [1].  __ip_make_skb()\\ntests HDRINCL to know if the skb has icmphdr. However, HDRINCL can cause a\\nrace condition. If calling setsockopt(2) with IP_HDRINCL changes HDRINCL\\nwhile __ip_make_skb() is running, the function will access icmphdr in the\\nskb even if it is not included. This causes the issue reported by KMSAN.\\n\\nCheck FLOWI_FLAG_KNOWN_NH on fl4-\u003eflowi4_flags instead of testing HDRINCL\\non the socket.\\n\\nAlso, fl4-\u003efl4_icmp_type and fl4-\u003efl4_icmp_code are not initialized. These\\nare union in struct flowi4 and are implicitly initialized by\\nflowi4_init_output(), but we should not rely on specific union layout.\\n\\nInitialize these explicitly in raw_sendmsg().\\n\\n[1]\\nBUG: KMSAN: uninit-value in __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n ip_finish_skb include/net/ip.h:243 [inline]\\n ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508\\n raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n slab_post_alloc_hook mm/slub.c:3804 [inline]\\n slab_alloc_node mm/slub.c:3845 [inline]\\n kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888\\n kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577\\n __alloc_skb+0x35a/0x7c0 net/core/skbuff.c:668\\n alloc_skb include/linux/skbuff.h:1318 [inline]\\n __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128\\n ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365\\n raw_sendmsg+0x22b1/0x2690 net/ipv4/raw.c:648\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nCPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipv4: corrigi\u00f3 el acceso de valor uninit en __ip_make_skb() KMSAN inform\u00f3 el acceso de valor uninit en __ip_make_skb() [1]. __ip_make_skb() prueba HDRINCL para saber si el skb tiene icmphdr. Sin embargo, HDRINCL puede provocar una condici\u00f3n de ejecuci\u00f3n. Si llamar a setsockopt(2) con IP_HDRINCL cambia HDRINCL mientras se ejecuta __ip_make_skb(), la funci\u00f3n acceder\u00e1 a icmphdr en el skb incluso si no est\u00e1 incluido. Esto provoca el problema informado por KMSAN. Verifique FLOWI_FLAG_KNOWN_NH en fl4-\u0026gt;flowi4_flags en lugar de probar HDRINCL en el socket. Adem\u00e1s, fl4-\u0026gt;fl4_icmp_type y fl4-\u0026gt;fl4_icmp_code no est\u00e1n inicializados. Estas son una uni\u00f3n en la estructura flowi4 y se inicializan impl\u00edcitamente mediante flowi4_init_output(), pero no debemos confiar en un dise\u00f1o de uni\u00f3n espec\u00edfico. Inicial\u00edcelos expl\u00edcitamente en raw_sendmsg(). [1] ERROR: KMSAN: valor uninit en __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481 ip_finish_skb include/net/ip.h:243 [ inline] ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508 raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 net/socket.c : 730 [en l\u00ednea] __sock_sendmsg+0x274/0x3c0 net/Socket.c: 745 __sys_sendto+0x62c/0x7b0 net/Socket.c: 2191 __do_sys_sendto net/socket.c: 2203 [en l\u00ednea] __se_sys_sendto net/sows. ] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slub.c :3804 [en l\u00ednea] slab_alloc_node mm/slub.c:3845 [en l\u00ednea] kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577 __alloc_skb+0x35a/0x7c0 net/core/skbuff.c: 668 alloc_skb include/linux/skbuff.h:1318 [en l\u00ednea] __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128 ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365 raw_sendmsg+0x22b1/0x2690 net /ipv4 /raw.c:648 inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x274/0x3c0 net/socket.c:745 __sys_sendto+0x62c/0x7b0 net / socket.c:2191 __do_sys_sendto net/socket.c:2203 [en l\u00ednea] __se_sys_sendto net/socket.c:2199 [en l\u00ednea] __x64_sys_sendto+0x130/0x200 net/socket.c:2199 do_syscall_64+0xd8/0x1f0 arch/x86/ent ry/ common.c:83 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 CPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16 .3-1.fc39 01/04/2014\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"},{\"lang\":\"en\",\"value\":\"CWE-908\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.315\",\"versionEndExcluding\":\"4.15\",\"matchCriteriaId\":\"1111243A-400E-4A73-B5EA-0042BC430A49\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.283\",\"versionEndExcluding\":\"4.20\",\"matchCriteriaId\":\"F6F05B8A-87E9-4349-B071-9F1FBB5C4D70\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.243\",\"versionEndExcluding\":\"5.5\",\"matchCriteriaId\":\"EEF2D40F-A6B5-43CB-8D3A-366DEC205D7C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.180\",\"versionEndExcluding\":\"5.11\",\"matchCriteriaId\":\"E7545FEB-B9DA-45FF-9B1B-514BDBF5DB3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.111\",\"versionEndExcluding\":\"5.16\",\"matchCriteriaId\":\"2D62CC1B-1C49-4746-82B9-74F3B2FE7C3B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.28\",\"versionEndExcluding\":\"6.2\",\"matchCriteriaId\":\"2172B100-DBCE-4EA0-B629-472FB9E924F8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.15\",\"versionEndExcluding\":\"6.3\",\"matchCriteriaId\":\"70B668F1-1B39-45E1-ADAC-438F51BF80D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.3.2\",\"versionEndExcluding\":\"6.6.31\",\"matchCriteriaId\":\"83047EA1-FC77-4934-819C-DC64A0C42878\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.10\",\"matchCriteriaId\":\"6A6B920C-8D8F-4130-86B4-AD334F4CF2E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"F850DCEC-E08B-4317-A33B-D2DCF39F601B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"91326417-E981-482E-A5A3-28BC1327521B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/20d3eb00ab81462d554ac6d09691b8d9aa5a5741\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/55bf541e018b76b3750cb6c6ea18c46e1ac5562e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/88c66f1879f322f11de34d37b2d3d87497afdcb6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:30:11.988Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-36927\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-30T18:44:15.154993Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-30T18:44:35.278Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"ipv4: Fix uninit-value access in __ip_make_skb()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"566785731c6dd41ef815196ddc36d1ae30a63763\", \"lessThan\": \"88c66f1879f322f11de34d37b2d3d87497afdcb6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a54ec573d9b81b05d368f8e6edc1b3e49f688658\", \"lessThan\": \"20d3eb00ab81462d554ac6d09691b8d9aa5a5741\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fc60067260c20da8cddcf968bec47416f3e2cde2\", \"lessThan\": \"55bf541e018b76b3750cb6c6ea18c46e1ac5562e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"99e5acae193e369b71217efe6f1dad42f3f18815\", \"lessThan\": \"5db08343ddb1b239320612036c398e4e1bb52818\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"99e5acae193e369b71217efe6f1dad42f3f18815\", \"lessThan\": \"f5c603ad4e6fcf42f84053e882ebe20184bb309e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"99e5acae193e369b71217efe6f1dad42f3f18815\", \"lessThan\": \"fc1092f51567277509563800a3c56732070b6aa4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"dc4e3bb0710178c8d03fc43064e0a71fe7440cdd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"022ea4374c319690c804706bda9dc42946d1556d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"27c468ec1af113f6ae94fb5378f65e6038bd16e7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"32a5a13d556e4f804e5a447a08c70b172d600707\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9e3c96aed8fe32907e0a4bca05aad457629a820c\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv4/ip_output.c\", \"net/ipv4/raw.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.248\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.140\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.31\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv4/ip_output.c\", \"net/ipv4/raw.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/88c66f1879f322f11de34d37b2d3d87497afdcb6\"}, {\"url\": \"https://git.kernel.org/stable/c/20d3eb00ab81462d554ac6d09691b8d9aa5a5741\"}, {\"url\": \"https://git.kernel.org/stable/c/55bf541e018b76b3750cb6c6ea18c46e1ac5562e\"}, {\"url\": \"https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818\"}, {\"url\": \"https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e\"}, {\"url\": \"https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv4: Fix uninit-value access in __ip_make_skb()\\n\\nKMSAN reported uninit-value access in __ip_make_skb() [1].  __ip_make_skb()\\ntests HDRINCL to know if the skb has icmphdr. However, HDRINCL can cause a\\nrace condition. If calling setsockopt(2) with IP_HDRINCL changes HDRINCL\\nwhile __ip_make_skb() is running, the function will access icmphdr in the\\nskb even if it is not included. This causes the issue reported by KMSAN.\\n\\nCheck FLOWI_FLAG_KNOWN_NH on fl4-\u003eflowi4_flags instead of testing HDRINCL\\non the socket.\\n\\nAlso, fl4-\u003efl4_icmp_type and fl4-\u003efl4_icmp_code are not initialized. These\\nare union in struct flowi4 and are implicitly initialized by\\nflowi4_init_output(), but we should not rely on specific union layout.\\n\\nInitialize these explicitly in raw_sendmsg().\\n\\n[1]\\nBUG: KMSAN: uninit-value in __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n __ip_make_skb+0x2b74/0x2d20 net/ipv4/ip_output.c:1481\\n ip_finish_skb include/net/ip.h:243 [inline]\\n ip_push_pending_frames+0x4c/0x5c0 net/ipv4/ip_output.c:1508\\n raw_sendmsg+0x2381/0x2690 net/ipv4/raw.c:654\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n slab_post_alloc_hook mm/slub.c:3804 [inline]\\n slab_alloc_node mm/slub.c:3845 [inline]\\n kmem_cache_alloc_node+0x5f6/0xc50 mm/slub.c:3888\\n kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:577\\n __alloc_skb+0x35a/0x7c0 net/core/skbuff.c:668\\n alloc_skb include/linux/skbuff.h:1318 [inline]\\n __ip_append_data+0x49ab/0x68c0 net/ipv4/ip_output.c:1128\\n ip_append_data+0x1e7/0x260 net/ipv4/ip_output.c:1365\\n raw_sendmsg+0x22b1/0x2690 net/ipv4/raw.c:648\\n inet_sendmsg+0x27b/0x2a0 net/ipv4/af_inet.c:851\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x274/0x3c0 net/socket.c:745\\n __sys_sendto+0x62c/0x7b0 net/socket.c:2191\\n __do_sys_sendto net/socket.c:2203 [inline]\\n __se_sys_sendto net/socket.c:2199 [inline]\\n __x64_sys_sendto+0x130/0x200 net/socket.c:2199\\n do_syscall_64+0xd8/0x1f0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nCPU: 1 PID: 15709 Comm: syz-executor.7 Not tainted 6.8.0-11567-gb3603fcb79b1 #25\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.248\", \"versionStartIncluding\": \"5.10.180\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.198\", \"versionStartIncluding\": \"5.15.111\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.140\", \"versionStartIncluding\": \"6.1.28\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.31\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.10\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.315\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.283\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.4.243\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.2.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.3.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-19T12:17:47.098Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36927\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-19T12:17:47.098Z\", \"dateReserved\": \"2024-05-30T15:25:07.069Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-30T15:29:20.275Z\", \"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.