CVE-2026-45838
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: fix end-of-list detection in cgroup_storage_get_next_key() list_next_entry() never returns NULL -- when the current element is the last entry it wraps to the list head via container_of(). The subsequent NULL check is therefore dead code and get_next_key() never returns -ENOENT for the last element, instead reading storage->key from a bogus pointer that aliases internal map fields and copying the result to userspace. Replace it with list_entry_is_head() so the function correctly returns -ENOENT when there are no more entries.
Predictions
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 | — |
Windows Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 7.0.10-1 |
| forky | Fixed | 7.0.10-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
References
- https://git.kernel.org/stable/c/b4b5a20bed82130da2f2818f04d52378952fbd0b
- https://git.kernel.org/stable/c/85a2f30e40f7468db732f55659bc6318874f49af
- https://git.kernel.org/stable/c/32ce55d424395904986f5066f8755f6cb9993377
- https://git.kernel.org/stable/c/fc39753b7f92e09177777e9c648afe5aa3abb81f
- https://git.kernel.org/stable/c/5828b9e5b272ecff7cf5d345128d3de7324117f7
- https://www.suse.com/security/cve/CVE-2026-45838.html
- https://security-tracker.debian.org/tracker/CVE-2026-45838
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45838
- https://git.kernel.org/stable/c/0f3d9dd5e1fd52b39e25328307c6a694e994ffe3
- https://git.kernel.org/stable/c/26d3339e465e54107bd85884341d1609c5300d6a
- https://git.kernel.org/stable/c/2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.