CVEvulnerability
CVE-2026-52950
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-06-24
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416, CWE-825
Description
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)
Affected configurations
• linux linux kernel (>= 6.18 < 6.18.33)
• linux linux kernel (>= 6.19 < 7.0.10)
• linux linux kernel 7.1
Related
References
- https://git.kernel.org/stable/c/155a372a1cc50fa93387c5d3cdfd614a61e1afd1 Patch
- https://git.kernel.org/stable/c/39fdac6be02eb7c3460518c1c4085f75f935c4ce Patch
- https://git.kernel.org/stable/c/827062952ed9bdf4220466c1f05ce452d04bdedf Patch
- https://access.redhat.com/errata/RHSA-2026:42919 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:45192 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2026-52950 Third Party Advisory
- 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