CVE-2026-90418

CVE CVE-2026-90418EUVD EUVD-2026-82079Published 2026-09-17T16:09:43.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch Syzbot reported a kernel BUG triggered within nilfs_copy_dirty_pages(), which copies dirty DAT file folios/pages to its shadow page cache. The BUG occurs when a retrieved dirty folio/page unexpectedly loses its 'dirty' status. This issue arises because, since the commit referenced below, the 'dirty' flag of a folio/page can be cleared asynchronously after the filesystem detects metadata corruption and transitions to read-only mode. Resolve the issue by returning an -EROFS error if the filesystem has transitioned to read-only mode. Also change the behavior to issue a kernel warning only once instead of triggering a kernel BUG when this unexpected 'dirty' state is detected while the filesystem is not in read-only mode.

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 8c26c4e2694a163d525976e804d81cd955bbb40c <3904fb0ee741ebbbc27ec8f50a9bb6cd31e8af05; 8c26c4e2694a163d525976e804d81cd955bbb40c <5166a21b12f549774f2983fa86d2526ea9e66ace; patch: 6.6.157; patch: 0; 8c26c4e2694a163d525976e804d81cd955bbb40c <4e1f21e7540b25d83f86b50780836ed7d2afcc93; patch: 7.2.6; 3.10; 8c26c4e2694a163d525976e804d81cd955bbb40c <f181155baf0c93a74ebe804c6cecbe970e78ee9e; patch: 7.3-rc1; patch: 6.18.52; patch: 6.12.110; 8c26c4e2694a163d525976e804d81cd955bbb40c <66f4ad3ce158902e5f98afea93189972ed8750c2

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

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Linux — Linux

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