# futex: Fix mm reuse handling for FUT_OFF_MMSHARED

CVE record · `CVE-2026-99169`

- **Identifiers:** `CVE-2026-99169`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 28 Oct 2026
- **Updated:** 30 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: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before 096b5d4b80d19b1f7bf8e63fae0d0a32dbb6e1a2` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before a7aa4ce1b56a688fe4da75430ec7bf9fe3311807` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before f470b76584b5e32d9f9436ef78fb899914116d75` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before 0c133ed51700036796318f038dde813976bf1227` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before 16cc0fee39dffd9994b7bea676a886ed52206754` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before c17cc2027773e8e4913c5ab0fe3a489b1ed5bf81` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before 2855ddc6844f527e375e78afb55ec2a5182f23b3` (git)
  - affected: `222993395ed38f3751287f4bd82ef46b3eb3a66d to before 3267512ad1c2cc0c7768c5b014dc2cceb398a801` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.7`
  - unaffected: `before 5.7` (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: `6.6.161 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th percentile, on 5 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 28 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99169](https://www.cve.org/CVERecord?id=CVE-2026-99169)
- [NVD: CVE-2026-99169](https://nvd.nist.gov/vuln/detail/CVE-2026-99169)

### References from the CNA

- <https://git.kernel.org/stable/c/096b5d4b80d19b1f7bf8e63fae0d0a32dbb6e1a2>
- <https://git.kernel.org/stable/c/a7aa4ce1b56a688fe4da75430ec7bf9fe3311807>
- <https://git.kernel.org/stable/c/f470b76584b5e32d9f9436ef78fb899914116d75>
- <https://git.kernel.org/stable/c/0c133ed51700036796318f038dde813976bf1227>
- <https://git.kernel.org/stable/c/16cc0fee39dffd9994b7bea676a886ed52206754>
- <https://git.kernel.org/stable/c/c17cc2027773e8e4913c5ab0fe3a489b1ed5bf81>
- <https://git.kernel.org/stable/c/2855ddc6844f527e375e78afb55ec2a5182f23b3>
- <https://git.kernel.org/stable/c/3267512ad1c2cc0c7768c5b014dc2cceb398a801>

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-2026-99169>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99169/>. Everything for agents: <https://agentprime.io/llms.txt>.