# eventfs: Free the eventfs_inode after an rcu grace period too

CVE record · `CVE-2026-99173`

- **Identifiers:** `CVE-2026-99173`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 28 Oct 2026
- **Updated:** 31 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 28 Oct 2026, 10:35 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: `2ef3d120d19faba3dec35b10a025b00db0284373 to before 5819018dc29fb2ac2fd4865d507f9893c89c0624` (git)
  - affected: `8e556432477e97ad6179c61b61a32bf5f1af2355 to before dd2c767814a876be0f16f0b7f98a403dc176f51e` (git)
  - affected: `8e556432477e97ad6179c61b61a32bf5f1af2355 to before 4586ef24ce390e8becb9f3e5852d5d3978b01c33` (git)
  - affected: `8e556432477e97ad6179c61b61a32bf5f1af2355 to before 45fcfd5d9c10e0aa977ed5b9bd445707e01bb107` (git)
  - affected: `8e556432477e97ad6179c61b61a32bf5f1af2355 to before 2cd88c498ecff8e22bf4c397b8eb226db70ac343` (git)
  - affected: `384f383c5aa7bfd619d9f56a513a36e533428186` (git)
  - affected: `6.6.46 to before 6.6.161` (semver)
  - affected: `6.10.5 to before 6.11` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.11`
  - unaffected: `before 6.11` (semver)
  - unaffected: `6.6.161 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.115 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.59 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.13 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:** 0.0013, the 2nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 28 Oct 2026, 10:35 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-99173)

## Sources

- [CVE List: CVE-2026-99173](https://www.cve.org/CVERecord?id=CVE-2026-99173)
- [NVD: CVE-2026-99173](https://nvd.nist.gov/vuln/detail/CVE-2026-99173)

### References from the CNA

- <https://git.kernel.org/stable/c/5819018dc29fb2ac2fd4865d507f9893c89c0624>
- <https://git.kernel.org/stable/c/dd2c767814a876be0f16f0b7f98a403dc176f51e>
- <https://git.kernel.org/stable/c/4586ef24ce390e8becb9f3e5852d5d3978b01c33>
- <https://git.kernel.org/stable/c/45fcfd5d9c10e0aa977ed5b9bd445707e01bb107>
- <https://git.kernel.org/stable/c/2cd88c498ecff8e22bf4c397b8eb226db70ac343>

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-2026-99173>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99173/>. Everything for agents: <https://agentprime.io/llms.txt>.