CVE-2026-43117
CriticalCVSS 9.1Summary
W jądrze Linuxa rozwiązano podatność związaną z systemem plików btrfs, która występowała w funkcji btrfs_sync_file(). Użycie overlay na btrfs prowadziło do błędnego przypisania superbloku, co mogło skutkować awarią systemu.
Risk Assessment
Organizacje korzystające z btrfs w połączeniu z overlay mogą doświadczyć krytycznych awarii systemu, co prowadzi do utraty danych i przestojów w działaniu usług.
Recommendation
Zaleca się aktualizację jądra Linuxa do wersji, w której ta podatność została naprawiona, aby uniknąć potencjalnych awarii związanych z używaniem overlay na btrfs.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS