# USB: serial: fix ioctl hangup race

CVE record · `CVE-2026-98695`

- **Identifiers:** `CVE-2026-98695`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:46 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: `f34d7a5b7010b82fe97da95496b9971435530062 to before c7ef25e96dc3f808eb891bbbd43b6a682846eb0c` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before 98f0a25134bfce44ebd1db0341fa0e8603ff276d` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before 3a728adbed9fd822f99a9d9c5ebad5c3b565ba4a` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before 24d6edb6bd7f7a9e6cee2f8fe435781daab8aa0f` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before ae0da9a5c1ca95c20cc5feffd511ce6eae75924e` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before 4597ddd6168ae2a4123404e5f0871f1070dc7773` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before 7912a95d1345c77d8d63b530b00c118700b78abd` (git)
  - affected: `f34d7a5b7010b82fe97da95496b9971435530062 to before ae0e61d95677efa778379853e495d748e6efbf95` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.26`
  - unaffected: `before 2.6.26` (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: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.56 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.10 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:** 0.0021, the 11th percentile, on 10 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-2026-98695](https://www.cve.org/CVERecord?id=CVE-2026-98695)
- [NVD: CVE-2026-98695](https://nvd.nist.gov/vuln/detail/CVE-2026-98695)

### References from the CNA

- <https://git.kernel.org/stable/c/c7ef25e96dc3f808eb891bbbd43b6a682846eb0c>
- <https://git.kernel.org/stable/c/98f0a25134bfce44ebd1db0341fa0e8603ff276d>
- <https://git.kernel.org/stable/c/3a728adbed9fd822f99a9d9c5ebad5c3b565ba4a>
- <https://git.kernel.org/stable/c/24d6edb6bd7f7a9e6cee2f8fe435781daab8aa0f>
- <https://git.kernel.org/stable/c/ae0da9a5c1ca95c20cc5feffd511ce6eae75924e>
- <https://git.kernel.org/stable/c/4597ddd6168ae2a4123404e5f0871f1070dc7773>
- <https://git.kernel.org/stable/c/7912a95d1345c77d8d63b530b00c118700b78abd>
- <https://git.kernel.org/stable/c/ae0e61d95677efa778379853e495d748e6efbf95>

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-2026-98695>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98695/>. Everything for agents: <https://agentprime.io/llms.txt>.