CVE-2026-89553
CVSS v3
7.8
HIGH
EPSS Score
0.2 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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.
Technical details
- Published
- 2026-09-11
- Last Modified
- 2026-09-13
Frequently asked questions
What is CVE-2026-89553?
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.
Is CVE-2026-89553 actively exploited?
Active exploitation of CVE-2026-89553 has not been confirmed. Its EPSS score was 0.2% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-89553?
CVE-2026-89553 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-89553 affecting your environment?
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