CVSS 7.8 · High EPSS 0,29%
Kerentanan Use After Free pada debian linux, linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: ext4: fix timer use-after-free on failed mount Syzbot has found an ODEBUG bug in ext4_fill_super The del_timer_sync function cancels the s_err_report timer, which reminds about filesystem errors daily. We should guarantee the timer is no longer active before kfree(sbi). When filesystem mounting fails, the flow goes to failed_mount3, where an error occurs when ext4_stop_mmpd is called, causing a read I/O failure. This triggers the ext4_handle_error function that ultimately re-arms the timer, leaving the s_err_report timer active before kfree(sbi) is called. Fix the issue by canceling the s_err_report timer after calling ext4_stop_mmpd.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| debian | debian linux | Versi 11.0 |
| linux | linux kernel | Semua versi sebelum 5.10.237 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.181 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.118 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.55 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.10.14 |
| linux | linux kernel | Versi 6.11 hingga sebelum 6.11.3 |