CVE-2026-89553 (CVSS 7.8)

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.

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CVSS v3.1 Score

7.8

HIGH

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

EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81 https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89553? +

CVE-2026-89553 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-89553? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-89553