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

CVE record · `CVE-2026-89553`

- **Identifiers:** `CVE-2026-89553`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before 3e9c9090d4cc5a61ab5067ac5502c4fd37891b97` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before 24340ab41c33e16b3d64d89cb738ecd83c78de49` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before f57e0d3bee3f7a459c048e10fd1cbcfd1dac2e0f` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before e05c28bd6043d0fd0bea9c3fc49300a8871a1a81` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before 208867763843aa82efcbe3b771f1b8e6c7aa820a` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before ff110e85837d7ecd83f36078107be240ff5ae409` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before e60466011ac3a6b8045e6cc3c2cbb30d58039d2e` (git)
  - affected: `e758a3111914af7ee4351be86f1ac0efe87ed06e to before 5e17160d41d92823f3379c1982e1369680c5ce4d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.1`
  - unaffected: `before 3.1` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Linux kernel nouveau driver (GEM info ioctl): a race in the non-uvmm path lets the info lookup use a VMA that the GEM close path may already have closed, causing a use-after-free. The source does not state the attacker's required access or the resulting impact beyond the use-after-free. Affected versions are listed as starting at commit e758a3111914af7ee4351be86f1ac0efe87ed06e and fixed in several stable commits; upgrade to a fixed kernel version from your distribution or the stable branch.

Written 12 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89553](https://www.cve.org/CVERecord?id=CVE-2026-89553)
- [NVD: CVE-2026-89553](https://nvd.nist.gov/vuln/detail/CVE-2026-89553)

### References from the CNA

- <https://git.kernel.org/stable/c/3e9c9090d4cc5a61ab5067ac5502c4fd37891b97>
- <https://git.kernel.org/stable/c/24340ab41c33e16b3d64d89cb738ecd83c78de49>
- <https://git.kernel.org/stable/c/f57e0d3bee3f7a459c048e10fd1cbcfd1dac2e0f>
- <https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81>
- <https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a>
- <https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409>
- <https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e>
- <https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89553>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89553/>. Everything for agents: <https://agentprime.io/llms.txt>.