CVSS 5.5 · Medium EPSS 0,25%
Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: blk-iocost: do not WARN if iocg was already offlined In iocg_pay_debt(), warn is triggered if 'active_list' is empty, which is intended to confirm iocg is active when it has debt. However, warn can be triggered during a blkcg or disk removal, if iocg_waitq_timer_fn() is run at that time: WARNING: CPU: 0 PID: 2344971 at block/blk-iocost.c:1402 iocg_pay_debt+0x14c/0x190 Call trace: iocg_pay_debt+0x14c/0x190 iocg_kick_waitq+0x438/0x4c0 iocg_waitq_timer_fn+0xd8/0x130 __run_hrtimer+0x144/0x45c __hrtimer_run_queues+0x16c/0x244 hrtimer_interrupt+0x2cc/0x7b0 The warn in this situation is meaningless. Since this iocg is being removed, the state of the 'active_list' is irrelevant, and 'waitq_timer' is canceled after removing 'active_list' in ioc_pd_free(), which ensures iocg is freed after iocg_waitq_timer_fn() returns. Therefore, add the check if iocg was already offlined to avoid warn when removing a blkcg or disk.
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 | Versi 5.4 hingga sebelum 5.10.237 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.181 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.135 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.31 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.8.10 |
| linux | linux kernel | Versi 6.9 rc1 |
| linux | linux kernel | Versi 6.9 rc2 |
| linux | linux kernel | Versi 6.9 rc3 |
| linux | linux kernel | Versi 6.9 rc4 |