Bug 2532079 (CVE-2026-89553) - CVE-2026-89553 kernel: nouveau/gem: reserve the bo in the info ioctl around the vma lookup
Summary: CVE-2026-89553 kernel: nouveau/gem: reserve the bo in the info ioctl around t...
Keywords:
Status: NEW
Alias: CVE-2026-89553
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: 2026-09-11 20:25 UTC by OSIDB Bzimport
Modified: 2026-09-14 19:24 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-11 20:25:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nouveau/gem: reserve the bo in the info ioctl around the vma lookup

In the non-uvmm path, there could be a race between the info lookup
finding the vma, and the gem close path closing the vma leading
to a use-after-free.

Spotted with the help of Opus 4.6.
Comment 1 Mauro Matteo Cascella 2026-09-14 19:20:35 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89553.mbox
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