CVE-2026-23141
MediumCVSS 5.5Summary
W jądrze systemu Linux zidentyfikowano podatność w funkcji btrfs: send, która nieprawidłowo sprawdza inline extents w funkcji range_is_hole_in_parent(). Niewłaściwy dostęp do pola disk_bytenr może prowadzić do nieprawidłowego dostępu do pamięci, co jest szczególnie niebezpieczne w przypadku inline extents.
Risk Assessment
Podatność ta może prowadzić do nieautoryzowanego dostępu do pamięci, co może skutkować awarią systemu lub wyciekiem danych. Organizacje powinny być świadome ryzyka związanego z używaniem podatnej wersji jądra.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, w której ta podatność została załatana. Regularne monitorowanie i aktualizowanie systemów jest kluczowe dla zapewnienia bezpieczeństwa.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in range_is_hole_in_parent() Before accessing the disk_bytenr field of a file extent item we need to check if we are dealing with an inline extent. This is because for inline extents their data starts at the offset of the disk_bytenr field. So accessing the disk_bytenr means we are accessing inline data or in case the inline data is less than 8 bytes we can actually cause an invalid memory access if this inline extent item is the first item in the leaf or access metadata from other items.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

