CVE-2025-40242
Linux Kernel 5.15.0-6.12.55, 6.13.0-6.17.5, and specific commits - Use-After-Free in gdlm_put_lock
Title source: llmDescription
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.
References (5)
Core 5
Core References
Scores
EPSS
0.0003
EPSS Percentile
9.0%
Details
Status
published
Products (30)
linux/Kernel
5.15.0 - 6.12.56linux
linux/Kernel
6.13.0 - 6.17.6linux
Linux/Linux
< 5.15
Linux/Linux
01eb3106f43335fdc02111358dae80a5c3fd324d
Linux/Linux
02e838963fdaa6ce8570b5389aecdc6cf1fb40b0
Linux/Linux
2225a5cd2fbc2ef0e0f78e585db3844f60416a39
Linux/Linux
3554b46204e67333e1fb8be0e93936fb08267c80
Linux/Linux
4.14.247 - 4.15
Linux/Linux
4.19.207 - 4.20
Linux/Linux
4.4.284 - 4.5
... and 20 more
Published
Dec 04, 2025
Tracked Since
Feb 18, 2026