# drm/nouveau/uvmm: fix NULL deref unwinding an OP_MAP_SPARSE op

CVE record · `CVE-2026-89802`

- **Identifiers:** `CVE-2026-89802`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:30 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: `b88baab828713ce0b49b185444b2ee83bed373a8 to before d8ec34618e71018fd7a3f73c57c6b92d71a6c7c3` (git)
  - affected: `b88baab828713ce0b49b185444b2ee83bed373a8 to before 3bf493cf7ed0c2b3df728977a257e0d99b4db1c6` (git)
  - affected: `b88baab828713ce0b49b185444b2ee83bed373a8 to before b7dc03e09313d22a6d230b759de3b05d504c008f` (git)
  - affected: `b88baab828713ce0b49b185444b2ee83bed373a8 to before 3857238de6bce6c1573e8cb86c37b067e5208f05` (git)
  - affected: `b88baab828713ce0b49b185444b2ee83bed373a8 to before 412a6ceb56d501ef2f8202e26ab4b5d4dfbca566` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.6`
  - unaffected: `before 6.6` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0020, the 10th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89802](https://www.cve.org/CVERecord?id=CVE-2026-89802)
- [NVD: CVE-2026-89802](https://nvd.nist.gov/vuln/detail/CVE-2026-89802)

### References from the CNA

- <https://git.kernel.org/stable/c/d8ec34618e71018fd7a3f73c57c6b92d71a6c7c3>
- <https://git.kernel.org/stable/c/3bf493cf7ed0c2b3df728977a257e0d99b4db1c6>
- <https://git.kernel.org/stable/c/b7dc03e09313d22a6d230b759de3b05d504c008f>
- <https://git.kernel.org/stable/c/3857238de6bce6c1573e8cb86c37b067e5208f05>
- <https://git.kernel.org/stable/c/412a6ceb56d501ef2f8202e26ab4b5d4dfbca566>

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-2026-89802>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89802/>. Everything for agents: <https://agentprime.io/llms.txt>.