8.8

CVE-2026-63885

drm/gem: fix race between change_handle and handle_delete

In the Linux kernel, the following vulnerability has been resolved:

drm/gem: fix race between change_handle and handle_delete

drm_gem_change_handle_ioctl leaves the old handle live in the IDR
during the window between spin_unlock(table_lock) and the final
spin_lock(table_lock). A concurrent drm_gem_handle_delete on the old
handle succeeds in this window, decrements handle_count to 0, and frees
the GEM object while the new handle's IDR entry still references it.

NULL the old handle's IDR entry before dropping table_lock so that any
concurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL.
Restore the old entry on the prime-bookkeeping error path.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 672464dd53231509c9c771110798c56d4660e19e
Version < 0dfa42cfe4dbe114533480503934f43e33c1e83d
Status affected
Version 61bd96d3e5472c253f9c1ab77608f0c8aaa9d025
Version < cde2c9257cbe8463b9dcf7b1075177b72b5fd938
Status affected
Version 5e28b7b94408897e41c63477aabc9e1db439bc8c
Version < 7164d78559b0ff29931a366a840a9e5dd53d4b7c
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 6.18.32
Version < 6.18.35
Status affected
Version 7.0.9
Version < 7.0.12
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.058
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/0dfa42cfe4dbe114533480503934f43e33c1e83d
https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938
https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c