CVE-2010-2798
HighSummary
Funkcja gfs2_dirent_find_space w jądrze Linux przed wersją 2.6.35 używa nieprawidłowej wartości rozmiaru w obliczeniach związanych z sentinelowymi wpisami katalogów. Umożliwia to lokalnym użytkownikom spowodowanie odmowy usługi (dereferencja wskaźnika NULL i panika) poprzez zmianę nazwy pliku w systemie plików GFS2.
Risk Assessment
Podatność ta może prowadzić do awarii systemu, co wpływa na dostępność usług. Istnieje również ryzyko nieokreślonego wpływu na system w wyniku manipulacji plikami.
Recommendation
Zaleca się aktualizację jądra Linux do wersji 2.6.35 lub nowszej, aby usunąć tę podatność. Dodatkowo, monitorowanie działań użytkowników lokalnych może pomóc w wykrywaniu potencjalnych prób wykorzystania tej luki.
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Original NVD description (English source)
The gfs2_dirent_find_space function in fs/gfs2/dir.c in the Linux kernel before 2.6.35 uses an incorrect size value in calculations associated with sentinel directory entries, which allows local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact by renaming a file in a GFS2 filesystem, related to the gfs2_rename function in fs/gfs2/ops_inode.c.

