CVE-2025-40242

gfs2: Fix unlikely race in gdlm_put_lock

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

04 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/279bde3bbb0ac0bad5c729dfa85983d75a5d7641 https://git.kernel.org/stable/c/28c4d9bc0708956c1a736a9e49fee71b65deee81 https://git.kernel.org/stable/c/4913592a3358f6ec366b8346b733d5e2360b08e1 https://git.kernel.org/stable/c/5fdc1474e678eea1700aa266c0b7c2c96f81dd0d https://git.kernel.org/stable/c/64c61b4ac645222fa7b724cef616c1f862a72a40