{"id":"CVE-2026-89608","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89608","summary":"ecryptfs: pass packet set buffer size to parser","details":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.","published":"2026-09-11T19:45:10.318Z","modified":"2026-09-14T03:46:17.667793566Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.109"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96"},{"type":"WEB","url":"https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89608.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89608"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:46:17.667793566Z"}}