CVE-2022-50020
MEDIUM severity · CVSS 5.5 · CWE-1284
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid resizing to a partial cluster size This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount, which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1Patch
- https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bdPatch
- https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8Patch
- https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1Patch
- https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074Patch
- https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849Patch