CVE-2026-43124

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9 ↗

Additional information

• NVD record
• 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