CVE-2026-31455
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
W jądrze systemu Linux zidentyfikowano podatność, która została naprawiona. Problem dotyczy sekwencji odmontowywania w funkcji xfs_unmount_flush_inodes(), gdzie AIL był przesuwany podczas działania odzyskiwania w tle i inodegc, co mogło prowadzić do nieprawidłowego działania.
Risk Assessment
Organizacja może być narażona na problemy związane z integralnością danych, ponieważ nieprawidłowe zarządzanie inode'ami podczas odmontowywania może prowadzić do ich usunięcia lub uszkodzenia.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby usunąć tę podatność oraz monitorowanie systemu pod kątem nieprawidłowego działania związanych z zarządzaniem inode'ami.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: xfs: stop reclaim before pushing AIL during unmount The unmount sequence in xfs_unmount_flush_inodes() pushed the AIL while background reclaim and inodegc are still running. This is broken independently of any use-after-free issues - background reclaim and inodegc should not be running while the AIL is being pushed during unmount, as inodegc can dirty and insert inodes into the AIL during the flush, and background reclaim can race to abort and free dirty inodes. Reorder xfs_unmount_flush_inodes() to stop inodegc and cancel background reclaim before pushing the AIL. Stop inodegc before cancelling m_reclaim_work because the inodegc worker can re-queue m_reclaim_work via xfs_inodegc_set_reclaimable.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

