CVE-2021-4155
high
CVSS v3
—
CVSS v4 NEW
—
VIR risk
8.0
Description
A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 5.15.15-1 |
| sid | Fixed | 5.15.15-1 |
| forky | Fixed | 5.15.15-1 |
| bullseye | Fixed | 5.10.92-1 |
| bookworm | Fixed | 5.15.15-1 |
Red Hat Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
References
- https://www.suse.com/security/cve/CVE-2021-4155.html
- https://errata.rockylinux.org/RLSA-2022:0188
- https://errata.rockylinux.org/RLSA-2022:0176
- https://security-tracker.debian.org/tracker/CVE-2021-4155
- https://errata.almalinux.org/8/ALSA-2022-0188.html
- https://access.redhat.com/errata/RHSA-2022:0176
- https://access.redhat.com/errata/RHSA-2022:0188
- https://access.redhat.com/errata/RHSA-2022:0232
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.