CVE-2026-90161

CVE CVE-2026-90161EUVD EUVD-2026-81754Published 2026-09-17T16:06:52.000ZLast changed 2026-09-18T17:53:29.000ZCVSS 7.1

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: erofs: fix interlaced ztailpacking pclusters On-disk sizes of interlaced pclusters should be block-aligned, and ztailpacking interlaced pclusters should be invalid at all. Currently, mkfs.erofs won't generate any interlaced pcluster with ztailpacking enabled, so this doesn't affect any existing valid filesystems. However, crafted images can contain invalid interlaced ztailpacking pclusters, resulting in an out-of-bounds read from a kmap'd page and copying irrelevant kernel memory into userspace-visible page cache.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; patch: 6.18.52; 6.1; 6.0.16 <6.1; 7d6ef8277e44c22f894d54d26ddb36c22d60712d; fdffc091e6f94602558bba712b51bc16f79fd6d5 <ddb7ea4fd99bf6c4314d1dfca18aec6945ce8054; fdffc091e6f94602558bba712b51bc16f79fd6d5 <862427ebb81d1f6abbf74d799790e1694b37b187; patch: 7.2.6; fdffc091e6f94602558bba712b51bc16f79fd6d5 <451027c642e752420e1a04237db9ce7b35cee595; patch: 7.3-rc1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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