What is CVE-2026-68459?
The CVE-2026-68459 vulnerability in the Linux kernel affects the F2FS filesystem, potentially causing a deadlock in the `f2fs_balance_fs()` function when the 'gc_merge' mount option is used. This can lead to system unresponsiveness due to resource locking among kworker, GC thread, and truncator. Users should apply the kernel patch or temporarily disable gc_merge as a mitigation.
Azərbaycanca: Linux kernel-də F2FS fayl sistemi üçün aşkarlanan CVE-2026-68459 zəifliyi, 'gc_merge' mount seçimi aktiv olduqda `f2fs_balance_fs()` funksiyasında potensial deadlock vəziyyətinə səbəb ola bilər. Bu, xüsusilə kworker, GC thread və truncator arasında resurs bloklanması ilə sistemin cavabsız qalması riski yaradır. İstifadəçilər müvafiq kernel yeniləməsini tətbiq etməli və ya keçici həll kimi gc_merge seçimini deaktiv etməlidir.
FAQ2
Under what condition does CVE-2026-68459 cause a deadlock in the Linux kernel's F2FS filesystem?
This vulnerability occurs in the `f2fs_balance_fs()` function when the 'gc_merge' mount option is enabled, leading to system unresponsiveness due to resource locking among kworker, GC thread, and truncator.
What temporary mitigation can be applied for CVE-2026-68459?
Users can temporarily disable the 'gc_merge' mount option as a workaround until the kernel patch is applied.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.