CVE-2025-40242 — Improper Synchronization in Linux
Severity
3.2LOWOSV
No vectorEPSS
0.0%
top 89.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 4
Latest updateApr 9
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.