CVE-2024-36927
- Source
- https://cve.org/CVERecord?id=CVE-2024-36927
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-36927.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-36927
- Downstream
AZL (1)
BELL (1)
ECHO (1)
MGASA (2)
RLSA (2)
ROOT (3)
RXSA (1)
SUSE (8)
- Related
- Published
- 2024-05-30T15:29:20Z
- Modified
- 2026-10-16T02:31:00Z
- Summary
- ipv4: Fix uninit-value access in __ip_make_skb()
- Details
-
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
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36927.json" }- References
-
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://git.kernel.org/stable/c/20d3eb00ab81462d554ac6d09691b8d9aa5a5741
- https://git.kernel.org/stable/c/55bf541e018b76b3750cb6c6ea18c46e1ac5562e
- https://git.kernel.org/stable/c/5db08343ddb1b239320612036c398e4e1bb52818
- https://git.kernel.org/stable/c/88c66f1879f322f11de34d37b2d3d87497afdcb6
- https://git.kernel.org/stable/c/f5c603ad4e6fcf42f84053e882ebe20184bb309e
- https://git.kernel.org/stable/c/fc1092f51567277509563800a3c56732070b6aa4
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36927.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-36927
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced566785731c6dd41ef815196ddc36d1ae30a63763Fixed88c66f1879f322f11de34d37b2d3d87497afdcb6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda54ec573d9b81b05d368f8e6edc1b3e49f688658Fixed20d3eb00ab81462d554ac6d09691b8d9aa5a5741
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfc60067260c20da8cddcf968bec47416f3e2cde2Fixed55bf541e018b76b3750cb6c6ea18c46e1ac5562e
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced99e5acae193e369b71217efe6f1dad42f3f18815Fixed5db08343ddb1b239320612036c398e4e1bb52818Fixedf5c603ad4e6fcf42f84053e882ebe20184bb309eFixedfc1092f51567277509563800a3c56732070b6aa4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.10.180Fixed5.10.248
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.15.111Fixed5.15.198
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.28Fixed6.1.140
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4.14.315Fixed4.15
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4.19.283Fixed4.20
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.4.243Fixed5.5
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.2.15Fixed6.3
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.3.2Fixed6.4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddc4e3bb0710178c8d03fc43064e0a71fe7440cdd
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced022ea4374c319690c804706bda9dc42946d1556d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced27c468ec1af113f6ae94fb5378f65e6038bd16e7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced32a5a13d556e4f804e5a447a08c70b172d600707
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9e3c96aed8fe32907e0a4bca05aad457629a820c
Affected versions
v4.*
v5.*
v6.*
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.10.248
- Type
- ECOSYSTEM
- Events
-
Introduced5.11.0Fixed5.15.198
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.140
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.31
- Type
- ECOSYSTEM
- Events
-
Introduced6.4.0Fixed6.8.10