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Vulnerability record · CVE-2026-52950 · published 24 June 2026

CVE-2026-52950: Linux kernel use after free vulnerability

Linux · Linux Kernel

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)

7.8 CVSS 3.1 High EPSS 0.18% · top 93.4% CWE-416 · Use after freeCWE-825 · CWE-825
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
27 Jul 2026Last modified by NVD

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)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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
https://access.redhat.com/errata/RHSA-2026:45192
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

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Source: NIST National Vulnerability Database (record CVE-2026-52950), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.