# tty: tty_port: restore TTY_IO_ERROR on activation failure

CVE record · `CVE-2026-98753`

- **Identifiers:** `CVE-2026-98753`
- **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, 15:47 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: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 761e8c5eb13d1b5e196b0b39bdfed6fc67af9dd2` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 5469dc4153a60289c5bae00215947c6ce09fcc0e` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before e24625bff786fa3f22cc38b5038362b910621e83` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 16032c980d8f71642fcdc99309c571df3fcf3328` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 34d4f67472ef7a744970b772a8565ddc727788e2` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 7021acc84c2e0add77a1a33152e3a1e428fdbfdb` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 6388409b711eb91b14fa075a4d861ccc4df1cfe7` (git)
  - affected: `a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 to before 56964f6a31238fb41d5830bb42520c5b10ff7d8f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.33`
  - unaffected: `before 2.6.33` (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:** 0.0018, the 7th 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-2026-98753](https://www.cve.org/CVERecord?id=CVE-2026-98753)
- [NVD: CVE-2026-98753](https://nvd.nist.gov/vuln/detail/CVE-2026-98753)

### References from the CNA

- <https://git.kernel.org/stable/c/761e8c5eb13d1b5e196b0b39bdfed6fc67af9dd2>
- <https://git.kernel.org/stable/c/5469dc4153a60289c5bae00215947c6ce09fcc0e>
- <https://git.kernel.org/stable/c/e24625bff786fa3f22cc38b5038362b910621e83>
- <https://git.kernel.org/stable/c/16032c980d8f71642fcdc99309c571df3fcf3328>
- <https://git.kernel.org/stable/c/34d4f67472ef7a744970b772a8565ddc727788e2>
- <https://git.kernel.org/stable/c/7021acc84c2e0add77a1a33152e3a1e428fdbfdb>
- <https://git.kernel.org/stable/c/6388409b711eb91b14fa075a4d861ccc4df1cfe7>
- <https://git.kernel.org/stable/c/56964f6a31238fb41d5830bb42520c5b10ff7d8f>

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-2026-98753>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98753/>. Everything for agents: <https://agentprime.io/llms.txt>.