CVE-2026-64031

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

Description A race condition exists in the erofs component when handling unaligned compressed extents. This occurs when one thread executes filemap add folio() but has not yet called folio attach private(), allowing a second thread to find the same managed folio in z erofs bind cache() and call filemap add folio() again. This issue specifically impacts unaligned data compression, such as when using -E48bit with zstd.

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