CVE-2026-43393
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies() Fix a chunk map leak in btrfs_map_block(): if we return early with -EINVAL, we're not freeing the chunk map that we've just looked up.
Predictions
Exploit likelihood
55%
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.10-1 |
| debian | sid | fixed | 6.19.10-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.12.78 | |
| linux-kernel | 7.0 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gcp | | |
References
- https://git.kernel.org/stable/c/0e4aaf5a3212b6a469c2489637c29a8e2a5062a5
- https://git.kernel.org/stable/c/4f90c5c2698383984102401b1724b0b67da832ab
- https://git.kernel.org/stable/c/7bdf00ed75c477252578068dba19934cd825f20a
- https://git.kernel.org/stable/c/f15fb3d41543244d1179f423da4a4832a55bc050
- https://www.suse.com/security/cve/CVE-2026-43393.html
- https://security-tracker.debian.org/tracker/CVE-2026-43393
CWEs
CWE-401
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.