CVE-2026-43124
Description
In the Linux kernel, the following vulnerability has been resolved: pstore: ram_core: fix incorrect success return when vmap() fails In persistent_ram_vmap(), vmap() may return NULL on failure. If offset is non-zero, adding offset_in_page(start) causes the function to return a non-NULL pointer even though the mapping failed. persistent_ram_buffer_map() therefore incorrectly returns success. Subsequent access to prz->buffer may dereference an invalid address and cause crashes. Add proper NULL checking for vmap() failures.
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
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.170-1 |
| debian | forky | fixed | 6.19.6-1 |
| debian | sid | fixed | 6.19.6-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 5.10.252 | |
| debian | bullseye | fixed | 5.10.257-1 |
References
- https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9
- https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003
- https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb
- https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c
- https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75
- https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9
- https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441
- https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b
- https://www.suse.com/security/cve/CVE-2026-43124.html
- https://security-tracker.debian.org/tracker/CVE-2026-43124
CWEs
CWE-476
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.