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CVE-2023-54088

blk-cgroup: hold queue_lock when removing blkg->q_node

HIGH
7.8
CVSS Score
Published: December 24, 2025 at 01:06 PM UTC
Updated: October 15, 2026 at 10:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: hold queue_lock when removing blkg->q_node When blkg is removed from q->blkg_list from blkg_free_workfn(), queue_lock has to be held, otherwise, all kinds of bugs(list corruption, hard lockup, ..) can be triggered from blkg_destroy_all().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.1.166.2.36.381c1188905f88b77743d1fdeeedfc8cb7b67787dbfe46d2efe46c5c952f982e2ca94fe2ec5e58e2af1c006f1c6850c14040f8337753a63119bba39b9
Vendor states this is fixed in 083b58373463a6e5ee60ecb135269348f68ad7df (fixed)
Vendor states this is fixed in b5dae1cd0d8368b4338430ff93403df67f0b8bcc (fixed)
Vendor states this is fixed in c164c7bc9775be7bcc68754bb3431fce5823822e (fixed)
Vendor states this is fixed in cd4ffdf56791eec95af01f06bee1ec7665ca75c4 (fixed)
Vendor states this is fixed in 6.1.17 (unaffected)
Vendor states this is fixed in 6.2.4 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)
Vendor states this is fixed in 6.4.12 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/083b58373463a6e5ee60ecb135269348f68ad7df
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b5dae1cd0d8368b4338430ff93403df67f0b8bcc
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c164c7bc9775be7bcc68754bb3431fce5823822e
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/cd4ffdf56791eec95af01f06bee1ec7665ca75c4

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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