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medium5.5

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(), …

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.16.62 before 5.10.252
from 5.11 before 5.15.202
from 5.16 before 6.1.165
from 6.2 before 6.6.128
from 6.7 before 6.12.75
from 6.13 before 6.18.16

Weakness classification

CWE-476

References