CVE-2024-50230
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug due to missing clearing of checked flag Syzbot reported that in directory operations after nilfs2 detects filesystem corruption and degrades to read-only,…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug due to missing clearing of checked flag Syzbot reported that in directory operations after nilfs2 detects filesystem corruption and degrades to read-only, __block_write_begin_int(), which is called to prepare block writes, may fail the BUG_ON check for accesses exceeding the folio/page size, triggering a kernel bug. This was found to be because the "checked" flag of a page/folio was not cleared when it was discarded by nilfs2's own routine, which causes the sanity check of directory entries to be skipped when the directory page/folio is reloaded. So, fix that. This was necessary when the use of nilfs2's own page discard routine was applied to more than just metadata files.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/41e192ad2779cae0102879612dfe46726e4396aaPatch
- https://git.kernel.org/stable/c/56c6171932a7fb267ac6cb4ff8759b93ee1d0e2ePatch
- https://git.kernel.org/stable/c/64afad73e4623308d8943645e5631f2c7a2d7971Patch
- https://git.kernel.org/stable/c/994b2fa13a6c9cf3feca93090a9c337d48e3d60dPatch
- https://git.kernel.org/stable/c/aa0cee46c5d3fd9a39575a4c8a4f65f25f095b89Patch
- https://git.kernel.org/stable/c/cd0cdb51b15203fa27d4b714be83b7dfffa0b752Patch
- https://git.kernel.org/stable/c/f05dbebb8ee34882505d53d83af7d18f28a49248Patch
- https://git.kernel.org/stable/c/f2f1fa446676c21edb777e6d2bc4fa8f956fab68Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.