CVE-2022-50020
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-12753.html
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:12753
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-12752.html
Vendor advisory: alma — https://bugzilla.redhat.com/2373630
Vendor advisory: alma — https://bugzilla.redhat.com/2373383
Vendor advisory: alma — https://bugzilla.redhat.com/2373380
Vendor advisory: alma — https://bugzilla.redhat.com/2366848
Vendor advisory: alma — https://bugzilla.redhat.com/2360099
Vendor advisory: alma — https://bugzilla.redhat.com/2356592
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:12752
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-50020
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-50020.html
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:12752
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:12753
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2023:2458
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.0.2-1 |
| debian | bullseye | fixed | 5.10.140-1 |
| debian | forky | fixed | 6.0.2-1 |
| debian | sid | fixed | 6.0.2-1 |
| debian | trixie | fixed | 6.0.2-1 |
References
- https://access.redhat.com/errata/RHSA-2023:2458
- https://errata.rockylinux.org/RLSA-2025:12753
- https://errata.rockylinux.org/RLSA-2025:12752
- https://www.suse.com/security/cve/CVE-2022-50020.html
- https://security-tracker.debian.org/tracker/CVE-2022-50020
- https://access.redhat.com/errata/RHSA-2025:12752
- https://bugzilla.redhat.com/2356592
- https://bugzilla.redhat.com/2360099
- https://bugzilla.redhat.com/2366848
- https://bugzilla.redhat.com/2373380
- https://bugzilla.redhat.com/2373383
- https://bugzilla.redhat.com/2373630
- https://errata.almalinux.org/8/ALSA-2025-12752.html
- https://access.redhat.com/errata/RHSA-2025:12753
- https://errata.almalinux.org/8/ALSA-2025-12753.html
Verify integrity in audit chain (admin only). AS-IS.