CVE-2025-40242

Published: Dec 4, 2025

Modified: May 23, 2026

PUBLISHED

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.

Vendor	Product	Versions
Linux	Linux	affected `d1340f80f0b8066321b499a376780da00560e857 - < 5fdc1474e678eea1700aa266c0b7c2c96f81dd0d` affected `d1340f80f0b8066321b499a376780da00560e857 - < 4913592a3358f6ec366b8346b733d5e2360b08e1` affected `d1340f80f0b8066321b499a376780da00560e857 - < 279bde3bbb0ac0bad5c729dfa85983d75a5d7641` affected `d1340f80f0b8066321b499a376780da00560e857 - < 64c61b4ac645222fa7b724cef616c1f862a72a40` affected `d1340f80f0b8066321b499a376780da00560e857 - < 28c4d9bc0708956c1a736a9e49fee71b65deee81` +16 more versions
Linux	Linux	affected `5.15` unaffected `0 - < 5.15` unaffected `6.1.168 - <= 6.1.` unaffected `6.6.131 - <= 6.6.` unaffected `6.12.56 - <= 6.12.*` +2 more versions

References

https://git.kernel.org/stable/c/5fdc1474e678eea1700aa266c0b7c2c96f81dd0d

https://git.kernel.org/stable/c/4913592a3358f6ec366b8346b733d5e2360b08e1

https://git.kernel.org/stable/c/279bde3bbb0ac0bad5c729dfa85983d75a5d7641

https://git.kernel.org/stable/c/64c61b4ac645222fa7b724cef616c1f862a72a40

https://git.kernel.org/stable/c/28c4d9bc0708956c1a736a9e49fee71b65deee81

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CVE-2025-40242

Description

Affected Products

References