CVE-2022-50746erofs: validate the extent length for uncompressed pclusters
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: erofs: validate the extent length for uncompressed pclusters syzkaller reported a KASAN use-after-free: https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2 The referenced fuzzed image actually has two issues: - m_pa == 0 as a non-inlined pcluster; - The logical length is longer than its physical length. The first issue has already been addressed. This patch addresses the second issue by checking the extent length validity.
- CVSS
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 02827e1796b33f1794966f5c3101f8da2dfa9c1d before dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e; 02827e1796b33f1794966f5c3101f8da2dfa9c1d builds before 40c73b2ea9611b5388807be406f30f5e4e1162da; from 02827e1796b33f1794966f5c3101f8da2dfa9c1d before c505feba4c0d76084e56ec498ce819f02a7043ae | CNA record |
References
- https://git.kernel.org/stable/c/dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e
- https://git.kernel.org/stable/c/40c73b2ea9611b5388807be406f30f5e4e1162da
- https://git.kernel.org/stable/c/c505feba4c0d76084e56ec498ce819f02a7043ae
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.