CVE-2024-36908

Advisory lineage Upstream: 0 Downstream: 30
Modified
Published: 30 May 2024, 15:29
Last modified:11 May 2026, 20:16

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
v3.1 (cve.org)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 May 2024, 15:29
Published
Vulnerability first disclosed
11 May 2026, 20:16
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Affected Systems

  • linux•linux

    ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < 56a9d07f427378eeb75b917bb49c6fbea8204126 | ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < 7d215e013d097ed6fc4b0ad0272c9514214dc408 | ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < aed0aac18f039dd4af13c143063754efca358cb0 | ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < 1c172ac7afe4442964f4153b2c78fe4e005d9d67 | ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < 14b3275f93d4a0d8ddc02195bc4e9869b7a3700e | ≥ 7caa47151ab2e644dd221f741ec7578d9532c9a3, < 01bc4fda9ea0a6b52f12326486f07a4910666cf6 | 5.4

  • linux•linux_kernel

    ≥ 5.4, < 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.135 | ≥ 6.2, < 6.6.31 | ≥ 6.7, < 6.8.10 | 6.9:rc1 | 6.9:rc2 | 6.9:rc3 | 6.9:rc4

References (8)