{"id":"CVE-2026-89954","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: afs: validate v2 image info bounds\n\nThe AFS v2 parser uses footer[8] to locate the image information block\ninside the current erase block, then uses the image info…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: afs: validate v2 image info bounds\n\nThe AFS v2 parser uses footer[8] to locate the image information block\ninside the current erase block, then uses the image info…","severity":"high","cvss":8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < 1bec05a68414cf8d0cab6cb42445b8603f32ffc4","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < 875daa3c750814ff2e2dc050239c390048f0bcd0","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < da740539e8f370767317e24615349b9342a6e773","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < 1edea8900ca3e405c1421d8b5c29f97107874f72","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < 18916f475057cbd2fb8ea6ae86e6b85884ad1d53","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < d14e6298139f58a87a87d7022e26a7f37f0ddce7","Linux >= b7cf5e2830bbb128699d7635ce8404b7f605bc95 < e9290031f736e99ad17c25c00311c92c266843b7","Linux 5.2"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:20.140","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89954","references":[{"url":"https://git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.962Z","epss":0.0018,"epssPercentile":0.07822,"slug":"CVE-2026-89954","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmtd: afs: validate v2 image info bounds\n\nThe AFS v2 parser uses footer[8] to locate the image information block\ninside the current erase block, then uses the image information\nregion_count to walk entries from a fixed local array. The footer offset\nand region count come from flash contents and are not checked against the\nerase block or the local image-info array before use.\n\nReject v2 entries whose image information offset would underflow the\nerase block calculation, and reject region counts that cannot fit in the\nlocal image-info array before walking region entries.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":44,"depthScoreParts":{"impact":44,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205091,"id":"CVE-2026-89954","ts":1789570705192,"field":"cvss","old":null,"new":"8"},{"seq":205090,"id":"CVE-2026-89954","ts":1789570705192,"field":"severity","old":"none","new":"high"}]}