CVE-2026-43124
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.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9Patch
- https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003Patch
- https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70ebPatch
- https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77cPatch
- https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75Patch
- https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9Patch
- https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441Patch
- https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.