CVE-2025-40242 - CVE House
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Status published Unknown CVE-2025-40242

gfs2: Fix unlikely race in gdlm_put_lock

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix unlikely race in gdlm_put_lock In gdlm_put_lock(), there is a small window of time in which the DFL_UNMOUNT flag has been set but the lockspace hasn't been released, yet. In that window, dlm may still call gdlm_ast() and gdlm_bast(). To prevent it from dereferencing freed glock objects, only free the glock if the lockspace has actually been released.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
d1340f80f0b8066321b499a376780da00560e857, 6aa628c45875e7b8cca81ed9447a12a0e8f3504a, a97e75203733be0a4263a78fb7b29352be150c1c, 3554b46204e67333e1fb8be0e93936fb08267c80, 5cff77b9827a956d076168b56775aad23bce87e4, 8deedce385d220f90e435f534d71d27526273515, 2225a5cd2fbc2ef0e0f78e585db3844f60416a39, 02e838963fdaa6ce8570b5389aecdc6cf1fb40b0, 01eb3106f43335fdc02111358dae80a5c3fd324d, 4.4.284, 4.9.283, 4.14.247, 4.19.207, 5.4.148, 5.10.67, 5.13.19, 5.14.6, 5.15, 0, 6.1.168, 6.6.131, 6.12.56, 6.17.6, 6.18

Timeline

Official Publish: December 4th, 2025
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.