7.8

CVE-2026-89553: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-89553DEBIAN-CVE-2026-89553
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-89553 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506OPENSUSE-SU-2026:11880-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ e758a3111914af7ee4351be86f1ac0efe87ed06e, < e05c28bd6043d0fd0bea9c3fc49300a8871a1a81 | ≥ e758a3111914af7ee4351be86f1ac0efe87ed06e, < 208867763843aa82efcbe3b771f1b8e6c7aa820a | ≥ e758a3111914af7ee4351be86f1ac0efe87ed06e, < ff110e85837d7ecd83f36078107be240ff5ae409 | ≥ e758a3111914af7ee4351be86f1ac0efe87ed06e, < e60466011ac3a6b8045e6cc3c2cbb30d58039d2e | ≥ e758a3111914af7ee4351be86f1ac0efe87ed06e, < 5e17160d41d92823f3379c1982e1369680c5ce4d | 3.1

3 vendors · 172 products

References

10 links