CVSS 5.5 · Medium EPSS 0,21%
Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: nilfs2: do not write dirty data after degenerating to read-only According to syzbot's report, mark_buffer_dirty() called from nilfs_segctor_do_construct() outputs a warning with some patterns after nilfs2 detects metadata corruption and degrades to read-only mode. After such read-only degeneration, page cache data may be cleared through nilfs_clear_dirty_page() which may also clear the uptodate flag for their buffer heads. However, even after the degeneration, log writes are still performed by unmount processing etc., which causes mark_buffer_dirty() to be called for buffer heads without the "uptodate" flag and causes the warning. Since any writes should not be done to a read-only file system in the first place, this fixes the warning in mark_buffer_dirty() by letting nilfs_segctor_do_construct() abort early if in read-only mode. This also changes the retry check of nilfs_segctor_write_out() to avoid unnecessary log write retries if it detects -EROFS that nilfs_segctor_do_construct() returned.
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 4.14.315 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.283 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.243 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.180 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.111 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.28 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.2.15 |
| linux | linux kernel | Versi 6.3 hingga sebelum 6.3.2 |