# io_uring: don't flood a cancelling task with task_work

CVE record · `CVE-2026-99254`

- **Identifiers:** `CVE-2026-99254`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 3 Nov 2026
- **Updated:** 3 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 3 Nov 2026, 11:20 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: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before a22fb44e988b01b82235ea07f0bf0fc73e256596` (git)
  - affected: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before 2c75ebae8a7f09c99e31c7042b7d4d595f03b2b1` (git)
  - affected: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before 61c761fc21e00e45c33c2bb596be442d92fb8792` (git)
  - affected: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before 14f56e9c0b8fdc2e178acdbec9781e90ef46f7e9` (git)
  - affected: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before abdc57c7ebabaaf0b622178a6a85834e1e54ff80` (git)
  - affected: `d56d938b4bef3e1421a42023cdcd6e13c1f50831 to before 22e643e61b9b6299b42ff7d88bab48bccada8a5d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.12`
  - unaffected: `before 5.12` (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: `6.18.60 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.14 to 7.2.*, inclusive` (semver)
  - unaffected: `7.4-rc1 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:** 0.0020, the 9th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 3 Nov 2026, 11:20 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-99254)
- 3 Nov 2026, 11:27 UTC: First seen by agentprime
- 3 Nov 2026, 12:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-99254)

## Sources

- [CVE List: CVE-2026-99254](https://www.cve.org/CVERecord?id=CVE-2026-99254)
- [NVD: CVE-2026-99254](https://nvd.nist.gov/vuln/detail/CVE-2026-99254)

### References from the CNA

- <https://git.kernel.org/stable/c/a22fb44e988b01b82235ea07f0bf0fc73e256596>
- <https://git.kernel.org/stable/c/2c75ebae8a7f09c99e31c7042b7d4d595f03b2b1>
- <https://git.kernel.org/stable/c/61c761fc21e00e45c33c2bb596be442d92fb8792>
- <https://git.kernel.org/stable/c/14f56e9c0b8fdc2e178acdbec9781e90ef46f7e9>
- <https://git.kernel.org/stable/c/abdc57c7ebabaaf0b622178a6a85834e1e54ff80>
- <https://git.kernel.org/stable/c/22e643e61b9b6299b42ff7d88bab48bccada8a5d>

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-2026-99254>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-99254/>. Everything for agents: <https://agentprime.io/llms.txt>.