DEBIAN-CVE-2024-26773
Record from OSV · Published April 3, 2024
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
Fixed versions
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| Package | Ecosystem | Fixed in |
|---|---|---|
| linux | Debian:14 | 6.7.7-1 |
| linux | Debian:13 | 6.7.7-1 |
| linux | Debian:12 | 6.1.82-1 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | linux | 0 |
| Debian:13 | linux | 0 |
| Debian:12 | linux | 6.1.27-1, 6.1.37-1, 6.1.38-1 |
Timeline
- Apr 3, 2024 CVE Published
- Oct 15, 2026 CVE Updated
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