CVE-2026-74591

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the filemap add folio() function within the Linux kernel. During a split-a-conflict loop, the xas set order() function repeatedly modifies xas.xa index by rounding it down. If a memory allocation fails and the lock is dropped to perform a xas nomem() allocation, a race condition may occur. If another thread resolves the conflict before the lock is reacquired, the system might insert a folio into the xarray at an incorrect, rounded-down index. This can lead to executable text being placed at an incorrect memory address, resulting in rare SIGILL (Illegal Instruction) and SIGSEGV (Segmentation Fault) errors.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.