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CVE-2023-54128

fs: drop peer group ids under namespace lock

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: fs: drop peer group ids under namespace lock When cleaning up peer group ids in the failure path we need to make sure to hold on to the namespace lock. Otherwise another thread might just turn the mount from a shared into a non-shared mount concurrently.

Affected

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

Linux Kernel· Linux
90%
2a1867219c7b27f928e2545782b86daaf9ad50bd5.12
Vendor states this is fixed in 0af8fae81d8b7f1beddc17c5d4cfa43235134648 (fixed)
Vendor states this is fixed in 65c324d3f35c05e37afec39ac80743583fdcc96c (fixed)
Vendor states this is fixed in cb2239c198ad9fbd5aced22cf93e45562da781eb (fixed)
Vendor states this is fixed in ddca03d97daa7b07b60c52e3d3060762732c6666 (fixed)
Vendor states this is fixed in 5.12 (unaffected)
Vendor states this is fixed in 5.15.107 (unaffected)
Vendor states this is fixed in 6.1.24 (unaffected)
Vendor states this is fixed in 6.2.11 (unaffected)
Vendor states this is fixed in 6.3 (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/0af8fae81d8b7f1beddc17c5d4cfa43235134648
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/65c324d3f35c05e37afec39ac80743583fdcc96c
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/cb2239c198ad9fbd5aced22cf93e45562da781eb
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ddca03d97daa7b07b60c52e3d3060762732c6666

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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