{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-26731","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.164Z","datePublished":"2024-04-03T17:00:18.823Z","dateUpdated":"2025-05-04T12:54:37.420Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T12:54:37.420Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()\n\nsyzbot reported the following NULL pointer dereference issue [1]:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  [...]\n  RIP: 0010:0x0\n  [...]\n  Call Trace:\n   <TASK>\n   sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230\n   unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293\n   sock_sendmsg_nosec net/socket.c:730 [inline]\n   __sock_sendmsg+0x221/0x270 net/socket.c:745\n   ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n   ___sys_sendmsg net/socket.c:2638 [inline]\n   __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n   do_syscall_64+0xf9/0x240\n   entry_SYSCALL_64_after_hwframe+0x6f/0x77\n\nIf sk_psock_verdict_data_ready() and sk_psock_stop_verdict() are called\nconcurrently, psock->saved_data_ready can be NULL, causing the above issue.\n\nThis patch fixes this issue by calling the appropriate data ready function\nusing the sk_psock_data_ready() helper and protecting it from concurrency\nwith sk->sk_callback_lock."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/skmsg.c"],"versions":[{"version":"dd628fc697ee59b76bd3877c4bd13f07ccc3776f","lessThan":"4588b13abcbd561ec67f5b3c1cb2eff690990a54","status":"affected","versionType":"git"},{"version":"6df7f764cd3cf5a03a4a47b23be47e57e41fcd85","lessThan":"9b099ed46dcaf1403c531ff02c3d7400fa37fa26","status":"affected","versionType":"git"},{"version":"6df7f764cd3cf5a03a4a47b23be47e57e41fcd85","lessThan":"d61608a4e394f23e0dca099df9eb8e555453d949","status":"affected","versionType":"git"},{"version":"6df7f764cd3cf5a03a4a47b23be47e57e41fcd85","lessThan":"4cd12c6065dfcdeba10f49949bffcf383b3952d8","status":"affected","versionType":"git"},{"version":"d3cbd7c571446a876aefd8320500300b2c951c58","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/core/skmsg.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.1.80","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.19","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.7","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","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":"6.1.32","versionEndExcluding":"6.1.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.7.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54"},{"url":"https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26"},{"url":"https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949"},{"url":"https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8"}],"title":"bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-476","lang":"en","description":"CWE-476 NULL Pointer Dereference"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-04-03T18:10:44.552667Z","id":"CVE-2024-26731","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-11-06T21:26:34.391Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:14:12.980Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8","tags":["x_transferred"]}]}]}}