{"id":"CVE-2025-38112","title":"net: Fix TOCTOU issue in sk_is_readable()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: Fix TOCTOU issue in sk_is_readable()\n\nsk->sk_prot->sock_is_readable is a valid function pointer when sk resides\nin a sockmap. After the last sk_psock_put() (which …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < c2b26638476baee154920bb587fc94ff1bf04336","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 6fa68d7eab34d448a61aa24ea31e68b3231ed20d","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 8926a7ef1977a832dd6bf702f1a99303dbf15b15","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < ff55c85a923e043d59d26b20a673a1b4a219c310","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 1e0de7582ceccbdbb227d4e0ddf65732f92526da","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 1b367ba2f94251822577daed031d6b9a9e11ba91","Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 2660a544fdc0940bba15f70508a46cf9a6491230","Linux 4.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:49:48.418942Z"},"published":"2025-07-03","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:52:16.103Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38112","references":[{"url":"https://git.kernel.org/stable/c/c2b26638476baee154920bb587fc94ff1bf04336"},{"url":"https://git.kernel.org/stable/c/6fa68d7eab34d448a61aa24ea31e68b3231ed20d"},{"url":"https://git.kernel.org/stable/c/8926a7ef1977a832dd6bf702f1a99303dbf15b15"},{"url":"https://git.kernel.org/stable/c/ff55c85a923e043d59d26b20a673a1b4a219c310"},{"url":"https://git.kernel.org/stable/c/1e0de7582ceccbdbb227d4e0ddf65732f92526da"},{"url":"https://git.kernel.org/stable/c/1b367ba2f94251822577daed031d6b9a9e11ba91"},{"url":"https://git.kernel.org/stable/c/2660a544fdc0940bba15f70508a46cf9a6491230"}],"tags":["cve.org"],"epss":0.00148,"epssPercentile":0.04065,"ingestedAt":"2026-11-05T22:38:31.931Z","slug":"CVE-2025-38112","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: Fix TOCTOU issue in sk_is_readable()\n\nsk->sk_prot->sock_is_readable is a valid function pointer when sk resides\nin a sockmap. After the last sk_psock_put() (which usually happens when\nsocket is removed from sockmap), sk->sk_prot gets restored and\nsk->sk_prot->sock_is_readable becomes NULL.\n\nThis makes sk_is_readable() racy, if the value of sk->sk_prot is reloaded\nafter the initial check. Which in turn may lead to a null pointer\ndereference.\n\nEnsure the function pointer does not turn NULL after the check.\n\n## Affected\n\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < c2b26638476baee154920bb587fc94ff1bf04336`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 6fa68d7eab34d448a61aa24ea31e68b3231ed20d`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 8926a7ef1977a832dd6bf702f1a99303dbf15b15`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < ff55c85a923e043d59d26b20a673a1b4a219c310`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 1e0de7582ceccbdbb227d4e0ddf65732f92526da`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 1b367ba2f94251822577daed031d6b9a9e11ba91`\n- `Linux >= 8934ce2fd08171e8605f7fada91ee7619fe17ab8 < 2660a544fdc0940bba15f70508a46cf9a6491230`\n- `Linux 4.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}