CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node() When __destroy_extent_node() sets the inode flag FI_NO_EXTENT, it does not reset the length of the largest extent to 0 and update the inode folio. Since modifications to the extent tree are disallowed afterward, the cached largest extent may become stale. This can trigger the following error in xfstests generic/388: F2FS-fs (dm-0): sanity_check_extent_cache: inode (ino=1761) extent info [220057, 57, 6] is incorrect, run fsck to fix In the f2fs_drop_inode path, __destroy_extent_node() does not need to guarantee that et->node_cnt is 0, because concurrency with writeback is expected in this path, and writeback may update the extent cache. This patch reverts commit ed78aeebef05 ("f2fs: fix node_cnt race between extent node destroy and writeback"), and remove the unnecessary zero check of et->node_cnt.
Засегнати продукти
- Linux Linux: 42dd1c91f993431d0b399502479d00e6ad1bca71 преди 7e4d8f98be63f98856a5176b9188dada6e7ba9ee; ab1eaf9d5c99042f5b0243bf67a06283a4c0757f преди 58a5deb220bcac4c73bf58954c0845644c997487; b0e4395870eb3441ddc959f6710b5f6ca61aff26 преди 20190e498057997532c7f186d081011f18e0a462; ed78aeebef05212ef7dca93bd931e4eff67c113f преди edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7; ed78aeebef05212ef7dca93bd931e4eff67c113f преди 1f70ddb28a3c71df124da5fa4040c808116d6bb9; b00e6950da9c0e4986f6e93c875d2b9184bdb220; 0559a0e962aacbb47519e26ee663be04b72dcb92; 6.6.140 преди 6.6.144; 6.12.88 преди 6.12.95; 6.18.30 преди 6.18.38; 6.1.191 преди 6.2; 7.0.7 преди 7.1
- Linux Linux: 7.1; преди 7.1; 6.6.144 до 6.6.*; 6.12.95 до 6.12.*; 6.18.38 до 6.18.*; 7.1.3 до 7.1.*; от 7.2 нататък
История
- 19 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-63812
- https://nvd.nist.gov/vuln/detail/CVE-2026-63812
- https://git.kernel.org/stable/c/7e4d8f98be63f98856a5176b9188dada6e7ba9ee
- https://git.kernel.org/stable/c/58a5deb220bcac4c73bf58954c0845644c997487
- https://git.kernel.org/stable/c/20190e498057997532c7f186d081011f18e0a462
- https://git.kernel.org/stable/c/edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7
- https://git.kernel.org/stable/c/1f70ddb28a3c71df124da5fa4040c808116d6bb9