CVE-2024-36938 (GCVE-0-2024-36938)
Vulnerability from cvelistv5 – Published: 2024-05-30 15:29 – Updated: 2026-05-11 20:17
VLAI
EPSS
VEX
Title
bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue
Fix NULL pointer data-races in sk_psock_skb_ingress_enqueue() which
syzbot reported [1].
[1]
BUG: KCSAN: data-race in sk_psock_drop / sk_psock_skb_ingress_enqueue
write to 0xffff88814b3278b8 of 8 bytes by task 10724 on cpu 1:
sk_psock_stop_verdict net/core/skmsg.c:1257 [inline]
sk_psock_drop+0x13e/0x1f0 net/core/skmsg.c:843
sk_psock_put include/linux/skmsg.h:459 [inline]
sock_map_close+0x1a7/0x260 net/core/sock_map.c:1648
unix_release+0x4b/0x80 net/unix/af_unix.c:1048
__sock_release net/socket.c:659 [inline]
sock_close+0x68/0x150 net/socket.c:1421
__fput+0x2c1/0x660 fs/file_table.c:422
__fput_sync+0x44/0x60 fs/file_table.c:507
__do_sys_close fs/open.c:1556 [inline]
__se_sys_close+0x101/0x1b0 fs/open.c:1541
__x64_sys_close+0x1f/0x30 fs/open.c:1541
do_syscall_64+0xd3/0x1d0
entry_SYSCALL_64_after_hwframe+0x6d/0x75
read to 0xffff88814b3278b8 of 8 bytes by task 10713 on cpu 0:
sk_psock_data_ready include/linux/skmsg.h:464 [inline]
sk_psock_skb_ingress_enqueue+0x32d/0x390 net/core/skmsg.c:555
sk_psock_skb_ingress_self+0x185/0x1e0 net/core/skmsg.c:606
sk_psock_verdict_apply net/core/skmsg.c:1008 [inline]
sk_psock_verdict_recv+0x3e4/0x4a0 net/core/skmsg.c:1202
unix_read_skb net/unix/af_unix.c:2546 [inline]
unix_stream_read_skb+0x9e/0xf0 net/unix/af_unix.c:2682
sk_psock_verdict_data_ready+0x77/0x220 net/core/skmsg.c:1223
unix_stream_sendmsg+0x527/0x860 net/unix/af_unix.c:2339
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x140/0x180 net/socket.c:745
____sys_sendmsg+0x312/0x410 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x1e9/0x280 net/socket.c:2667
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x46/0x50 net/socket.c:2674
do_syscall_64+0xd3/0x1d0
entry_SYSCALL_64_after_hwframe+0x6d/0x75
value changed: 0xffffffff83d7feb0 -> 0x0000000000000000
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10713 Comm: syz-executor.4 Tainted: G W 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Prior to this, commit 4cd12c6065df ("bpf, sockmap: Fix NULL pointer
dereference in sk_psock_verdict_data_ready()") fixed one NULL pointer
similarly due to no protection of saved_data_ready. Here is another
different caller causing the same issue because of the same reason. So
we should protect it with sk_callback_lock read lock because the writer
side in the sk_psock_drop() uses "write_lock_bh(&sk->sk_callback_lock);".
To avoid errors that could happen in future, I move those two pairs of
lock into the sk_psock_data_ready(), which is suggested by John Fastabend.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-04 15:38 UTC
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
604326b41a6fb9b4a78b6179335decee0365cd8c , < c0809c128dad4c3413818384eb06a341633db973
(git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 5965bc7535fb87510b724e5465ccc1a1cf00916d (git) Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 39dc9e1442385d6e9be0b6491ee488dddd55ae27 (git) Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < b397a0ab8582c533ec0c6b732392f141fc364f87 (git) Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 772d5729b5ff0df0d37b32db600ce635b2172f80 (git) Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 6648e613226e18897231ab5e42ffc29e63fa3365 (git) |
guessed | |
| Linux | Linux |
Affected:
4.20
Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.223 , ≤ 5.10.* (semver) Unaffected: 5.15.159 , ≤ 5.15.* (semver) Unaffected: 6.1.91 , ≤ 6.1.* (semver) Unaffected: 6.6.31 , ≤ 6.6.* (semver) Unaffected: 6.8.10 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
guessed |
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"nvd": "{\"cve\":{\"id\":\"CVE-2024-36938\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-30T16:15:16.897\",\"lastModified\":\"2026-06-17T07:37:24.343\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue\\n\\nFix NULL pointer data-races in sk_psock_skb_ingress_enqueue() which\\nsyzbot reported [1].\\n\\n[1]\\nBUG: KCSAN: data-race in sk_psock_drop / sk_psock_skb_ingress_enqueue\\n\\nwrite to 0xffff88814b3278b8 of 8 bytes by task 10724 on cpu 1:\\n sk_psock_stop_verdict net/core/skmsg.c:1257 [inline]\\n sk_psock_drop+0x13e/0x1f0 net/core/skmsg.c:843\\n sk_psock_put include/linux/skmsg.h:459 [inline]\\n sock_map_close+0x1a7/0x260 net/core/sock_map.c:1648\\n unix_release+0x4b/0x80 net/unix/af_unix.c:1048\\n __sock_release net/socket.c:659 [inline]\\n sock_close+0x68/0x150 net/socket.c:1421\\n __fput+0x2c1/0x660 fs/file_table.c:422\\n __fput_sync+0x44/0x60 fs/file_table.c:507\\n __do_sys_close fs/open.c:1556 [inline]\\n __se_sys_close+0x101/0x1b0 fs/open.c:1541\\n __x64_sys_close+0x1f/0x30 fs/open.c:1541\\n do_syscall_64+0xd3/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nread to 0xffff88814b3278b8 of 8 bytes by task 10713 on cpu 0:\\n sk_psock_data_ready include/linux/skmsg.h:464 [inline]\\n sk_psock_skb_ingress_enqueue+0x32d/0x390 net/core/skmsg.c:555\\n sk_psock_skb_ingress_self+0x185/0x1e0 net/core/skmsg.c:606\\n sk_psock_verdict_apply net/core/skmsg.c:1008 [inline]\\n sk_psock_verdict_recv+0x3e4/0x4a0 net/core/skmsg.c:1202\\n unix_read_skb net/unix/af_unix.c:2546 [inline]\\n unix_stream_read_skb+0x9e/0xf0 net/unix/af_unix.c:2682\\n sk_psock_verdict_data_ready+0x77/0x220 net/core/skmsg.c:1223\\n unix_stream_sendmsg+0x527/0x860 net/unix/af_unix.c:2339\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x140/0x180 net/socket.c:745\\n ____sys_sendmsg+0x312/0x410 net/socket.c:2584\\n ___sys_sendmsg net/socket.c:2638 [inline]\\n __sys_sendmsg+0x1e9/0x280 net/socket.c:2667\\n __do_sys_sendmsg net/socket.c:2676 [inline]\\n __se_sys_sendmsg net/socket.c:2674 [inline]\\n __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674\\n do_syscall_64+0xd3/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nvalue changed: 0xffffffff83d7feb0 -\u003e 0x0000000000000000\\n\\nReported by Kernel Concurrency Sanitizer on:\\nCPU: 0 PID: 10713 Comm: syz-executor.4 Tainted: G W 6.8.0-syzkaller-08951-gfe46a7dd189e #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\n\\nPrior to this, commit 4cd12c6065df (\\\"bpf, sockmap: Fix NULL pointer\\ndereference in sk_psock_verdict_data_ready()\\\") fixed one NULL pointer\\nsimilarly due to no protection of saved_data_ready. Here is another\\ndifferent caller causing the same issue because of the same reason. So\\nwe should protect it with sk_callback_lock read lock because the writer\\nside in the sk_psock_drop() uses \\\"write_lock_bh(\u0026sk-\u003esk_callback_lock);\\\".\\n\\nTo avoid errors that could happen in future, I move those two pairs of\\nlock into the sk_psock_data_ready(), which is suggested by John Fastabend.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf, skmsg: Se corrigi\u00f3 la desreferencia del puntero NULL en sk_psock_skb_ingress_enqueue Se corrigieron las ejecuci\u00f3ns de datos del puntero NULL en sk_psock_skb_ingress_enqueue() que syzbot inform\u00f3 [1]. [1] ERROR: KCSAN: ejecuci\u00f3n de datos en sk_psock_drop / sk_psock_skb_ingress_enqueue escribe en 0xffff88814b3278b8 de 8 bytes por tarea 10724 en la CPU 1: sk_psock_stop_verdict net/core/skmsg.c:1257 [en l\u00ednea] 0 neto/n\u00facleo/skmsg .c:843 sk_psock_put include/linux/skmsg.h:459 [en l\u00ednea] sock_map_close+0x1a7/0x260 net/core/sock_map.c:1648 unix_release+0x4b/0x80 net/unix/af_unix.c:1048 __sock_release net/socket. c:659 [en l\u00ednea] sock_close+0x68/0x150 net/socket.c:1421 __fput+0x2c1/0x660 fs/file_table.c:422 __fput_sync+0x44/0x60 fs/file_table.c:507 __do_sys_close fs/open.c:1556 [en l\u00ednea] __se_sys_close+0x101/0x1b0 fs/open.c:1541 __x64_sys_close+0x1f/0x30 fs/open.c:1541 do_syscall_64+0xd3/0x1d0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 leer en 0xffff8881 4b3278b8 de 8 bytes por tarea 10713 en la CPU 0: sk_psock_data_ready include/linux/skmsg.h:464 [en l\u00ednea] sk_psock_skb_ingress_enqueue+0x32d/0x390 net/core/skmsg.c:555 sk_psock_skb_ingress_self+0x185/0x1e0 net/core/skmsg.c:606 sk_psock_verdict_apply net /core/skmsg.c: 1008 [en l\u00ednea] sk_psock_verdict_recv+0x3e4/0x4a0 net/core/skmsg.c:1202 unix_read_skb net/unix/af_unix.c:2546 [en l\u00ednea] unix_stream_read_skb+0x9e/0xf0 net/unix/af_unix.c:2682 +0x77/0x220 net/core/skmsg.c:1223 unix_stream_sendmsg+0x527/0x860 net/unix/af_unix.c:2339 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x 312/ 0x410 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\u00ednea] __sys_sendmsg+0x1e9/0x280 net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [en l\u00ednea] __se_sys_sendmsg net/socket. c:2674 [en l\u00ednea] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674 do_syscall_64+0xd3/0x1d0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 valor cambiado: 0xffffffff83d7feb0 -\u0026gt; 0x0000000000000000 editado por Kernel Concurrency Sanitizer en: CPU: 0 PID: 10713 Comm: syz-executor .4 Contaminado: GW 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 29/02/2024 Antes de esto, confirme 4cd12c6065df (\\\"bpf, sockmap: corrija el puntero NULL dereference in sk_psock_verdict_data_ready()\\\") arregl\u00f3 un puntero NULL de manera similar debido a que no hay protecci\u00f3n de save_data_ready. Aqu\u00ed hay otra persona que llama y causa el mismo problema por el mismo motivo. Entonces deber\u00edamos protegerlo con el bloqueo de lectura sk_callback_lock porque el lado del escritor en sk_psock_drop() usa \\\"write_lock_bh(\u0026amp;sk-\u0026gt;sk_callback_lock);\\\". Para evitar errores que podr\u00edan ocurrir en el futuro, muevo esos dos pares de candados a sk_psock_data_ready(), sugerido por John Fastabend.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"include/linux/skmsg.h\",\"net/core/skmsg.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"c0809c128dad4c3413818384eb06a341633db973\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"5965bc7535fb87510b724e5465ccc1a1cf00916d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"39dc9e1442385d6e9be0b6491ee488dddd55ae27\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"b397a0ab8582c533ec0c6b732392f141fc364f87\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"772d5729b5ff0df0d37b32db600ce635b2172f80\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"604326b41a6fb9b4a78b6179335decee0365cd8c\",\"lessThan\":\"6648e613226e18897231ab5e42ffc29e63fa3365\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"include/linux/skmsg.h\",\"net/core/skmsg.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.20\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.223\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.159\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.91\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.31\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.10\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-04T15:38:33.489892Z\",\"id\":\"CVE-2024-36938\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.15.159\",\"matchCriteriaId\":\"6FB93658-2709-4338-A4A2-4EF2B669AC04\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.91\",\"matchCriteriaId\":\"4F8C886C-75AA-469B-A6A9-12BF1A29C0D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.31\",\"matchCriteriaId\":\"CDDB1F69-36AC-41C1-9192-E7CCEF5FFC00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.10\",\"matchCriteriaId\":\"6A6B920C-8D8F-4130-86B4-AD334F4CF2E3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b397a0ab8582c533ec0c6b732392f141fc364f87\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c0809c128dad4c3413818384eb06a341633db973\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b397a0ab8582c533ec0c6b732392f141fc364f87\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c0809c128dad4c3413818384eb06a341633db973\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T11:06:11+00:00",
"cve": "CVE-2024-36938",
"id": "CVE-2024-36938",
"initial_release_date": "2024-05-30T00:00:00+00:00",
"product_status:known_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36938.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c0809c128dad4c3413818384eb06a341633db973\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b397a0ab8582c533ec0c6b732392f141fc364f87\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T03:43:50.528Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-36938\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-04T15:38:33.489892Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-04T15:38:37.550Z\"}}], \"cna\": {\"title\": \"bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"c0809c128dad4c3413818384eb06a341633db973\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"5965bc7535fb87510b724e5465ccc1a1cf00916d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"39dc9e1442385d6e9be0b6491ee488dddd55ae27\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"b397a0ab8582c533ec0c6b732392f141fc364f87\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"772d5729b5ff0df0d37b32db600ce635b2172f80\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"604326b41a6fb9b4a78b6179335decee0365cd8c\", \"lessThan\": \"6648e613226e18897231ab5e42ffc29e63fa3365\", \"versionType\": \"git\"}], \"programFiles\": [\"include/linux/skmsg.h\", \"net/core/skmsg.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.20\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.20\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.223\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.159\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.91\", \"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\": [\"include/linux/skmsg.h\", \"net/core/skmsg.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c0809c128dad4c3413818384eb06a341633db973\"}, {\"url\": \"https://git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d\"}, {\"url\": \"https://git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27\"}, {\"url\": \"https://git.kernel.org/stable/c/b397a0ab8582c533ec0c6b732392f141fc364f87\"}, {\"url\": \"https://git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80\"}, {\"url\": \"https://git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue\\n\\nFix NULL pointer data-races in sk_psock_skb_ingress_enqueue() which\\nsyzbot reported [1].\\n\\n[1]\\nBUG: KCSAN: data-race in sk_psock_drop / sk_psock_skb_ingress_enqueue\\n\\nwrite to 0xffff88814b3278b8 of 8 bytes by task 10724 on cpu 1:\\n sk_psock_stop_verdict net/core/skmsg.c:1257 [inline]\\n sk_psock_drop+0x13e/0x1f0 net/core/skmsg.c:843\\n sk_psock_put include/linux/skmsg.h:459 [inline]\\n sock_map_close+0x1a7/0x260 net/core/sock_map.c:1648\\n unix_release+0x4b/0x80 net/unix/af_unix.c:1048\\n __sock_release net/socket.c:659 [inline]\\n sock_close+0x68/0x150 net/socket.c:1421\\n __fput+0x2c1/0x660 fs/file_table.c:422\\n __fput_sync+0x44/0x60 fs/file_table.c:507\\n __do_sys_close fs/open.c:1556 [inline]\\n __se_sys_close+0x101/0x1b0 fs/open.c:1541\\n __x64_sys_close+0x1f/0x30 fs/open.c:1541\\n do_syscall_64+0xd3/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nread to 0xffff88814b3278b8 of 8 bytes by task 10713 on cpu 0:\\n sk_psock_data_ready include/linux/skmsg.h:464 [inline]\\n sk_psock_skb_ingress_enqueue+0x32d/0x390 net/core/skmsg.c:555\\n sk_psock_skb_ingress_self+0x185/0x1e0 net/core/skmsg.c:606\\n sk_psock_verdict_apply net/core/skmsg.c:1008 [inline]\\n sk_psock_verdict_recv+0x3e4/0x4a0 net/core/skmsg.c:1202\\n unix_read_skb net/unix/af_unix.c:2546 [inline]\\n unix_stream_read_skb+0x9e/0xf0 net/unix/af_unix.c:2682\\n sk_psock_verdict_data_ready+0x77/0x220 net/core/skmsg.c:1223\\n unix_stream_sendmsg+0x527/0x860 net/unix/af_unix.c:2339\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x140/0x180 net/socket.c:745\\n ____sys_sendmsg+0x312/0x410 net/socket.c:2584\\n ___sys_sendmsg net/socket.c:2638 [inline]\\n __sys_sendmsg+0x1e9/0x280 net/socket.c:2667\\n __do_sys_sendmsg net/socket.c:2676 [inline]\\n __se_sys_sendmsg net/socket.c:2674 [inline]\\n __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674\\n do_syscall_64+0xd3/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nvalue changed: 0xffffffff83d7feb0 -\u003e 0x0000000000000000\\n\\nReported by Kernel Concurrency Sanitizer on:\\nCPU: 0 PID: 10713 Comm: syz-executor.4 Tainted: G W 6.8.0-syzkaller-08951-gfe46a7dd189e #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\n\\nPrior to this, commit 4cd12c6065df (\\\"bpf, sockmap: Fix NULL pointer\\ndereference in sk_psock_verdict_data_ready()\\\") fixed one NULL pointer\\nsimilarly due to no protection of saved_data_ready. Here is another\\ndifferent caller causing the same issue because of the same reason. So\\nwe should protect it with sk_callback_lock read lock because the writer\\nside in the sk_psock_drop() uses \\\"write_lock_bh(\u0026sk-\u003esk_callback_lock);\\\".\\n\\nTo avoid errors that could happen in future, I move those two pairs of\\nlock into the sk_psock_data_ready(), which is suggested by John Fastabend.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:02:47.927Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-36938\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:02:47.927Z\", \"dateReserved\": \"2024-05-30T15:25:07.071Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-30T15:29:26.929Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.
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