{"id":"CVE-2026-31631","title":"rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix buffer overread in rxgk_do_verify_authenticator()\n\nFix rxgk_do_verify_authenticator() to check the buffer size before checking\nthe nonce.","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 794586789800b16dcbe235452494f4223ac80413","Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 1c4422d8be81718ecb15d79aedff607323085201","Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < f564af387c8c28238f8ebc13314c589d7ba8475d","Linux 6.16"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:11:20.356548Z"},"published":"2026-04-24","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:17.371Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31631","references":[{"url":"https://git.kernel.org/stable/c/794586789800b16dcbe235452494f4223ac80413"},{"url":"https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201"},{"url":"https://git.kernel.org/stable/c/f564af387c8c28238f8ebc13314c589d7ba8475d"}],"tags":["cve.org"],"epss":0.00551,"epssPercentile":0.44867,"ingestedAt":"2026-10-16T17:24:46.664Z","slug":"CVE-2026-31631","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix buffer overread in rxgk_do_verify_authenticator()\n\nFix rxgk_do_verify_authenticator() to check the buffer size before checking\nthe nonce.\n\n## Affected\n\n- `Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 794586789800b16dcbe235452494f4223ac80413`\n- `Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 1c4422d8be81718ecb15d79aedff607323085201`\n- `Linux >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < f564af387c8c28238f8ebc13314c589d7ba8475d`\n- `Linux 6.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}