Bug 2468244 (CVE-2026-43370) - CVE-2026-43370 kernel: drm/amdgpu: Fix use-after-free race in VM acquire
Summary: CVE-2026-43370 kernel: drm/amdgpu: Fix use-after-free race in VM acquire
Keywords:
Status: NEW
Alias: CVE-2026-43370
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-08 15:06 UTC by OSIDB Bzimport
Modified: 2026-09-24 01:02 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:67150 0 None None None 2026-09-14 13:35:53 UTC
Red Hat Product Errata RHSA-2026:67471 0 None None None 2026-09-15 06:14:24 UTC
Red Hat Product Errata RHSA-2026:71016 0 None None None 2026-09-23 18:08:43 UTC
Red Hat Product Errata RHSA-2026:71213 0 None None None 2026-09-24 01:02:41 UTC

Description OSIDB Bzimport 2026-05-08 15:06:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Fix use-after-free race in VM acquire

Replace non-atomic vm->process_info assignment with cmpxchg()
to prevent race when parent/child processes sharing a drm_file
both try to acquire the same VM after fork().

(cherry picked from commit c7c573275ec20db05be769288a3e3bb2250ec618)
Comment 1 Alexander B 2026-05-08 16:41:48 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050829-CVE-2026-43370-4d49@gregkh/T
Comment 5 Jon Orris 2026-09-14 13:35:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67150 https://access.redhat.com/errata/RHSA-2026:67150
Comment 6 Jon Orris 2026-09-15 06:14:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67471 https://access.redhat.com/errata/RHSA-2026:67471
Comment 7 Jon Orris 2026-09-23 18:08:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:71016 https://access.redhat.com/errata/RHSA-2026:71016
Comment 8 Jon Orris 2026-09-24 01:02:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:71213 https://access.redhat.com/errata/RHSA-2026:71213
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