In the Linux kernel, the following vulnerability has been resolved:
pstore: ram_core: fix incorrect success return when vmap() fails
In persistentramvmap(), vmap() may return NULL on failure.
If offset is non-zero, adding offsetinpage(start) causes the function to return a non-NULL pointer even though the mapping failed. persistentrambuffer_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.
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43124.json"
}