# drm/nouveau: fix double-free in nvif_vmm_dtor

CVE record · `CVE-2026-98515`

- **Identifiers:** `CVE-2026-98515`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 24 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:17 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: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 023e7a01f8fb27799f0987b5bcda325d73a2904c` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 375901ac0f286e81be00a4126e57d488cb401884` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before bf542ecd4f60d4689818d194e7ca74772fe0f8b5` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before f09f4a536935b15539f2de9fe775a2641202be90` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 279e5ac137370e274a09dd552547ae6bddd0d4d5` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 109a8d2d5b7d2719ebe09df3f9241023900b3846` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 872a5473c02a26c955be44d52b7ab2f8ea70a2cf` (git)
  - affected: `20d8a88e557aae5264e793f4626c45cd644c7144 to before 97077ac87afe9e91ec074ef0be64454e7ccbf344` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.11`
  - unaffected: `before 4.11` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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

- 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:** 0.0017, the 6th percentile, on 8 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98515](https://www.cve.org/CVERecord?id=CVE-2026-98515)
- [NVD: CVE-2026-98515](https://nvd.nist.gov/vuln/detail/CVE-2026-98515)

### References from the CNA

- <https://git.kernel.org/stable/c/023e7a01f8fb27799f0987b5bcda325d73a2904c>
- <https://git.kernel.org/stable/c/375901ac0f286e81be00a4126e57d488cb401884>
- <https://git.kernel.org/stable/c/bf542ecd4f60d4689818d194e7ca74772fe0f8b5>
- <https://git.kernel.org/stable/c/f09f4a536935b15539f2de9fe775a2641202be90>
- <https://git.kernel.org/stable/c/279e5ac137370e274a09dd552547ae6bddd0d4d5>
- <https://git.kernel.org/stable/c/109a8d2d5b7d2719ebe09df3f9241023900b3846>
- <https://git.kernel.org/stable/c/872a5473c02a26c955be44d52b7ab2f8ea70a2cf>
- <https://git.kernel.org/stable/c/97077ac87afe9e91ec074ef0be64454e7ccbf344>

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-2026-98515>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98515/>. Everything for agents: <https://agentprime.io/llms.txt>.