{"id":"CVE-2026-90161","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced ztailpacking pclusters\n\nOn-disk sizes of interlaced pclusters should be block-aligned, and\nztailpacking interlaced pclusters should be invalid at …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced ztailpacking pclusters\n\nOn-disk sizes of interlaced pclusters should be block-aligned, and\nztailpacking interlaced pclusters should be invalid at …","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= fdffc091e6f94602558bba712b51bc16f79fd6d5 < ddb7ea4fd99bf6c4314d1dfca18aec6945ce8054","Linux >= fdffc091e6f94602558bba712b51bc16f79fd6d5 < 451027c642e752420e1a04237db9ce7b35cee595","Linux >= fdffc091e6f94602558bba712b51bc16f79fd6d5 < 862427ebb81d1f6abbf74d799790e1694b37b187","Linux 7d6ef8277e44c22f894d54d26ddb36c22d60712d","Linux >= 6.0.16 < 6.1","Linux 6.1"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:44.697","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90161","references":[{"url":"https://git.kernel.org/stable/c/451027c642e752420e1a04237db9ce7b35cee595","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/862427ebb81d1f6abbf74d799790e1694b37b187","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ddb7ea4fd99bf6c4314d1dfca18aec6945ce8054","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00167,"epssPercentile":0.06385,"ingestedAt":"2026-09-17T16:21:47.872Z","slug":"CVE-2026-90161","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced ztailpacking pclusters\n\nOn-disk sizes of interlaced pclusters should be block-aligned, and\nztailpacking interlaced pclusters should be invalid at all.\n\nCurrently, mkfs.erofs won't generate any interlaced pcluster with\nztailpacking enabled, so this doesn't affect any existing valid\nfilesystems.\n\nHowever, crafted images can contain invalid interlaced ztailpacking\npclusters, resulting in an out-of-bounds read from a kmap'd page and\ncopying irrelevant kernel memory into userspace-visible page cache.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207155,"id":"CVE-2026-90161","ts":1789757336835,"field":"cvss","old":null,"new":"7.1"},{"seq":207154,"id":"CVE-2026-90161","ts":1789757336835,"field":"severity","old":"none","new":"high"}]}