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  4. CVE 2026 89553 nouveaugem reserve the bo in the info ioctl
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Back to active CVEs
High · CVSS 7.8CVE-2026-89553

nouveau/gem: reserve the bo in the info ioctl around the vma lookupCVE-2026-89553

Answer in brief

CVE-2026-89553 records a High severity (CVSS 7.8) vulnerability in nouveau/gem: reserve the bo in the info ioctl around the vma lookup. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Oct 19, 2026Source checked Oct 27, 2026First seen by HOL Sep 11, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=e758a3111914af7ee4351be86f1ac0efe87ed06e <208867763843aa82efcbe3b771f1b8e6c7aa820a || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <ff110e85837d7ecd83f36078107be240ff5ae409 || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <e60466011ac3a6b8045e6cc3c2cbb30d58039d2e || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <5e17160d41d92823f3379c1982e1369680c5ce4d208867763843aa82efcbe3b771f1b8e6c7aa820a, ff110e85837d7ecd83f36078107be240ff5ae409, e60466011ac3a6b8045e6cc3c2cbb30d58039d2e, 5e17160d41d92823f3379c1982e1369680c5ce4d
Linux/Linuxgeneric3.1Not reported
Linux/Linuxgeneric>=e758a3111914af7ee4351be86f1ac0efe87ed06e <e05c28bd6043d0fd0bea9c3fc49300a8871a1a81 || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <208867763843aa82efcbe3b771f1b8e6c7aa820a || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <ff110e85837d7ecd83f36078107be240ff5ae409 || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <e60466011ac3a6b8045e6cc3c2cbb30d58039d2e || >=e758a3111914af7ee4351be86f1ac0efe87ed06e <5e17160d41d92823f3379c1982e1369680c5ce4de05c28bd6043d0fd0bea9c3fc49300a8871a1a81, 208867763843aa82efcbe3b771f1b8e6c7aa820a, ff110e85837d7ecd83f36078107be240ff5ae409, e60466011ac3a6b8045e6cc3c2cbb30d58039d2e, 5e17160d41d92823f3379c1982e1369680c5ce4d

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 208867763843aa82efcbe3b771f1b8e6c7aa820a; Linux/Linux to e05c28bd6043d0fd0bea9c3fc49300a8871a1a81 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 11, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 27, 2026
References
5 linked sources
Open source record