PT-2026-61180 · Linux · Linux
CVE-2026-63863
·
Published
2026-07-19
·
Updated
2026-07-19
CVSS v3.1
8.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
In the Linux kernel, the following vulnerability has been resolved:
drm/gpusvm: Fix unbalanced unlock in drm gpusvm scan mm()
There is a unbalanced lock/unlock to gpusvm notifier lock:
[ 931.045868] =====================================
[ 931.046509] WARNING: bad unlock balance detected!
[ 931.047149] 6.19.0-rc6+xe-**************** #9 Tainted: G U
[ 931.048150] -------------------------------------
[ 931.048790] kworker/u5:0/51 is trying to release lock (&gpusvm->notifier lock) at:
[ 931.049801] [] drm gpusvm scan mm+0x188/0x460 [drm gpusvm helper]
[ 931.050802] but there are no more locks to release!
[ 931.051463]
The drm gpusvm notifier unlock() sits under err free label and the
first jump to err free is just before calling the
drm gpusvm notifier lock() causing unbalanced unlock.
Fix
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Related Identifiers
Affected Products
Linux