CVE-2023-54128

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

Published

2025-12-24

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/0af8fae81d8b7f1beddc17c5d4cfa43235134648
• https://git.kernel.org/stable/c/65c324d3f35c05e37afec39ac80743583fdcc96c
• https://git.kernel.org/stable/c/cb2239c198ad9fbd5aced22cf93e45562da781eb
• https://git.kernel.org/stable/c/ddca03d97daa7b07b60c52e3d3060762732c6666

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