8.8

CVE-2026-63863

drm/gpusvm: Fix unbalanced unlock in drm_gpusvm_scan_mm()

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] [<ffffffffa090c0d8>] 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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version f1d08a5864822684773105c60528e2abb577ca6c
Version < 8efaa47a871662a8c21b819cec60786f7ef17ab4
Status affected
Version f1d08a5864822684773105c60528e2abb577ca6c
Version < d287dee565c3c32e1ed76ec1847af46809c29b90
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.0
Status affected
Version 0
Version < 7.0
Status unaffected
Version <= 7.0.*
Version 7.0.10
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.016
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2 6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/8efaa47a871662a8c21b819cec60786f7ef17ab4
https://git.kernel.org/stable/c/d287dee565c3c32e1ed76ec1847af46809c29b90