CVSS 5.5 · Medium EPSS 0,31%
Kerentanan pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Determine if the group block bitmap is corrupted before using ac_b_ex in ext4_mb_try_best_found() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse. ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Semua versi sebelum 4.19.308 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.270 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.211 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.150 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.80 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.19 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.7.7 |
| linux | linux kernel | Versi 6.8 rc1 |
| linux | linux kernel | Versi 6.8 rc2 |
| debian | debian linux | Versi 10.0 |