7.8

CVE-2026-52950

drm/xe/dma-buf: fix UAF with retry loop

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

drm/xe/dma-buf: fix UAF with retry loop

Retry doesn't work here, since bo will be freed on error, leading to
UAF. However, now that we do the alloc & init before the attach, we can
now combine this as one unit and have the init do the alloc for us. This
should make the retry safe.

Reported by Sashiko.

v2: Fix up the error unwind (CI)

(cherry picked from commit 479669418253e0f27f8cf5db01a731352ea592e7)
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.18 < 6.18.33
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.10
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
Linux ≫ Linux Kernel Version7.1 Updaterc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.037
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CWE-825 Expired Pointer Dereference

The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.

https://git.kernel.org/stable/c/39fdac6be02eb7c3460518c1c4085f75f935c4ce
Patch
https://git.kernel.org/stable/c/827062952ed9bdf4220466c1f05ce452d04bdedf
Patch
https://git.kernel.org/stable/c/155a372a1cc50fa93387c5d3cdfd614a61e1afd1
Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2492318
Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52950.json
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-52950
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:42919
https://access.redhat.com/errata/RHSA-2026:45192