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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00008.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

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Vendors Products
Linux
  • Linux Kernel
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/01bc4fda9ea0a6b52f12326486f07a4910666cf6 cve-icon cve-icon
https://git.kernel.org/stable/c/14b3275f93d4a0d8ddc02195bc4e9869b7a3700e cve-icon cve-icon
https://git.kernel.org/stable/c/1c172ac7afe4442964f4153b2c78fe4e005d9d67 cve-icon cve-icon
https://git.kernel.org/stable/c/56a9d07f427378eeb75b917bb49c6fbea8204126 cve-icon cve-icon
https://git.kernel.org/stable/c/7d215e013d097ed6fc4b0ad0272c9514214dc408 cve-icon cve-icon
https://git.kernel.org/stable/c/aed0aac18f039dd4af13c143063754efca358cb0 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-36908 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-36908 cve-icon
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 8e-05}

 epss

{'score': 9e-05}

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00031}

 epss

{'score': 8e-05}

Fri, 02 May 2025 06:30:00 +0000

Type Values Removed Values Added
References

Fri, 25 Apr 2025 10:30:00 +0000

Type Values Removed Values Added
References

Thu, 07 Nov 2024 17:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}

Wed, 06 Nov 2024 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T09:11:51.263Z

Reserved: 2024-05-30T15:25:07.067Z

Link: CVE-2024-36908

cve-icon Vulnrichment

Updated: 2024-08-02T03:43:49.881Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-30T16:15:14.300

Modified: 2025-05-02T07:15:53.757

Link: CVE-2024-36908

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-30T00:00:00Z

Links: CVE-2024-36908 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:31:42Z