{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T04:26:53.013","vulnerabilities":[{"cve":{"id":"CVE-2024-36938","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-30T16:15:16.897","lastModified":"2024-11-21T09:22:51.723","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 -> 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(&sk->sk_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 resolvió la siguiente vulnerabilidad: bpf, skmsg: Se corrigió la desreferencia del puntero NULL en sk_psock_skb_ingress_enqueue Se corrigieron las ejecucións de datos del puntero NULL en sk_psock_skb_ingress_enqueue() que syzbot informó [1]. [1] ERROR: KCSAN: ejecución 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 línea] 0 neto/núcleo/skmsg .c:843 sk_psock_put include/linux/skmsg.h:459 [en línea] 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 línea] 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 línea] __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 línea] 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 línea] sk_psock_verdict_recv+0x3e4/0x4a0 net/core/skmsg.c:1202 unix_read_skb net/unix/af_unix.c:2546 [en línea] 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 línea] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x 312/ 0x410 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en línea] __sys_sendmsg+0x1e9/0x280 net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [en línea] __se_sys_sendmsg net/socket. c:2674 [en línea] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674 do_syscall_64+0xd3/0x1d0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 valor cambiado: 0xffffffff83d7feb0 -> 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()\") arregló un puntero NULL de manera similar debido a que no hay protección de save_data_ready. Aquí hay otra persona que llama y causa el mismo problema por el mismo motivo. Entonces deberíamos protegerlo con el bloqueo de lectura sk_callback_lock porque el lado del escritor en sk_psock_drop() usa \"write_lock_bh(&sk->sk_callback_lock);\". Para evitar errores que podrían ocurrir en el futuro, muevo esos dos pares de candados a sk_psock_data_ready(), sugerido por John Fastabend."}],"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}]},"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"}]}}]}