{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-36927","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-30T15:25:07.069Z","datePublished":"2024-05-30T15:29:20.275Z","dateUpdated":"2026-01-19T12:17:47.098Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-01-19T12:17:47.098Z"},"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->flowi4_flags instead of testing HDRINCL\non the socket.\n\nAlso, fl4->fl4_icmp_type and fl4->fl4_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"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/ip_output.c","net/ipv4/raw.c"],"versions":[{"version":"566785731c6dd41ef815196ddc36d1ae30a63763","lessThan":"88c66f1879f322f11de34d37b2d3d87497afdcb6","status":"affected","versionType":"git"},{"version":"a54ec573d9b81b05d368f8e6edc1b3e49f688658","lessThan":"20d3eb00ab81462d554ac6d09691b8d9aa5a5741","status":"affected","versionType":"git"},{"version":"fc60067260c20da8cddcf968bec47416f3e2cde2","lessThan":"55bf541e018b76b3750cb6c6ea18c46e1ac5562e","status":"affected","versionType":"git"},{"version":"99e5acae193e369b71217efe6f1dad42f3f18815","lessThan":"5db08343ddb1b239320612036c398e4e1bb52818","status":"affected","versionType":"git"},{"version":"99e5acae193e369b71217efe6f1dad42f3f18815","lessThan":"f5c603ad4e6fcf42f84053e882ebe20184bb309e","status":"affected","versionType":"git"},{"version":"99e5acae193e369b71217efe6f1dad42f3f18815","lessThan":"fc1092f51567277509563800a3c56732070b6aa4","status":"affected","versionType":"git"},{"version":"dc4e3bb0710178c8d03fc43064e0a71fe7440cdd","status":"affected","versionType":"git"},{"version":"022ea4374c319690c804706bda9dc42946d1556d","status":"affected","versionType":"git"},{"version":"27c468ec1af113f6ae94fb5378f65e6038bd16e7","status":"affected","versionType":"git"},{"version":"32a5a13d556e4f804e5a447a08c70b172d600707","status":"affected","versionType":"git"},{"version":"9e3c96aed8fe32907e0a4bca05aad457629a820c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/ip_output.c","net/ipv4/raw.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"5.10.248","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.198","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.140","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.31","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.8.10","lessThanOrEqual":"6.8.*","status":"unaffected","versionType":"semver"},{"version":"6.9","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.180","versionEndExcluding":"5.10.248"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.111","versionEndExcluding":"5.15.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.28","versionEndExcluding":"6.1.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.31"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.8.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.315"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.283"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.243"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3.2"}]}]}],"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"}],"title":"ipv4: Fix uninit-value access in __ip_make_skb()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":"2024-06-04T17:47:46.460Z"}},{"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"}}]}}