# vfio/pci: clear vdev->msi_perm after freeing it on init failure

CVE record · `CVE-2026-89777`

- **Identifiers:** `CVE-2026-89777`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 08:48 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: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before eb84cd81040e58dd05ac190f561f2115e3367249` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before f0eea8f9013676b42289ec35941e848b8a543e19` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before d665a1688af7f8fefd7c0eb04f2a37122ce007f4` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before 25cdd2a492d868cff1e519a60fe282909c52d385` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before 812f1db7f0755a19ef16ecdc5cec51bcabc5eda5` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before 533d0c5feef85ee6404b9f41d5564fac6971a008` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before fda8fb7e8179561693a786a7af593f6b944a21c1` (git)
  - affected: `30ea32ab1951c80c6113f300fce2c70cd12659e4 to before dc77acfeb979dded39b247b60fef0399536bfa77` (git)
  - affected: `ac370e3d1f3b01519d2705cd5815d1c9d0a8812b` (git)
  - affected: `be363e27ec3c3a99793da2be6c07eafb95709c6b` (git)
  - affected: `f1b10ba5739440ca51d66f0b2949cead88d2dd02` (git)
  - affected: `dde3433de9a067a33d67d65b9093cad3e043e49e` (git)
  - and 4 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.20`
  - unaffected: `before 4.20` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th 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-2026-89777](https://www.cve.org/CVERecord?id=CVE-2026-89777)
- [NVD: CVE-2026-89777](https://nvd.nist.gov/vuln/detail/CVE-2026-89777)

### References from the CNA

- <https://git.kernel.org/stable/c/eb84cd81040e58dd05ac190f561f2115e3367249>
- <https://git.kernel.org/stable/c/f0eea8f9013676b42289ec35941e848b8a543e19>
- <https://git.kernel.org/stable/c/d665a1688af7f8fefd7c0eb04f2a37122ce007f4>
- <https://git.kernel.org/stable/c/25cdd2a492d868cff1e519a60fe282909c52d385>
- <https://git.kernel.org/stable/c/812f1db7f0755a19ef16ecdc5cec51bcabc5eda5>
- <https://git.kernel.org/stable/c/533d0c5feef85ee6404b9f41d5564fac6971a008>
- <https://git.kernel.org/stable/c/fda8fb7e8179561693a786a7af593f6b944a21c1>
- <https://git.kernel.org/stable/c/dc77acfeb979dded39b247b60fef0399536bfa77>

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-2026-89777>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89777/>. Everything for agents: <https://agentprime.io/llms.txt>.