CVE-2024-53221
MediumCVSS 5.5Summary
W jądrze systemu Linux zidentyfikowano podatność w module f2fs, która prowadzi do dereferencji wskaźnika null w funkcji f2fs_submit_page_bio(). Problem występuje podczas równoczesnej instalacji modułu f2fs.ko i montowania systemu plików f2fs, gdy zestaw f2fs nie jest zainicjowany przed rejestracją typu systemu plików.
Risk Assessment
Podatność ta może prowadzić do awarii systemu lub nieprzewidzianego zachowania podczas montowania systemu plików f2fs, co może wpłynąć na dostępność danych i stabilność systemu.
Recommendation
Zaleca się aktualizację jądra systemu Linux do wersji, w której ta podatność została naprawiona. Należy upewnić się, że wszystkie zasoby systemu plików f2fs są zainicjowane przed rejestracją typu systemu plików.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null-ptr-deref in f2fs_submit_page_bio() There's issue as follows when concurrently installing the f2fs.ko module and mounting the f2fs file system: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs] Call Trace: <TASK> f2fs_submit_page_bio+0x126/0x8b0 [f2fs] __get_meta_page+0x1d4/0x920 [f2fs] get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs] validate_checkpoint+0xac/0x290 [f2fs] f2fs_get_valid_checkpoint+0x207/0x950 [f2fs] f2fs_fill_super+0x1007/0x39b0 [f2fs] mount_bdev+0x183/0x250 legacy_get_tree+0xf4/0x1e0 vfs_get_tree+0x88/0x340 do_new_mount+0x283/0x5e0 path_mount+0x2b2/0x15b0 __x64_sys_mount+0x1fe/0x270 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Above issue happens as the biset of the f2fs file system is not initialized before register "f2fs_fs_type". To address above issue just register "f2fs_fs_type" at the last in init_f2fs_fs(). Ensure that all f2fs file system resources are initialized.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

