# cgroup: Avoid iteration of dying tasks with zero refcount

CVE record · `CVE-2026-98163`

- **Identifiers:** `CVE-2026-98163`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 26 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 26 Sept 2026, 08:31 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: `260fbcb92bbeacfcd050410fdc2d24ab15044400 to before 828938118d6c2bb711301748c3e39e4bed6a62f5` (git)
  - affected: `260fbcb92bbeacfcd050410fdc2d24ab15044400 to before 057dac23d329d5c5ed62352f2659a39fd46c6d4a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.19`
  - unaffected: `before 6.19` (semver)
  - unaffected: `7.2.8 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:** 0.0011, the 1st percentile, on 11 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 26 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98163](https://www.cve.org/CVERecord?id=CVE-2026-98163)
- [NVD: CVE-2026-98163](https://nvd.nist.gov/vuln/detail/CVE-2026-98163)

### References from the CNA

- <https://git.kernel.org/stable/c/828938118d6c2bb711301748c3e39e4bed6a62f5>
- <https://git.kernel.org/stable/c/057dac23d329d5c5ed62352f2659a39fd46c6d4a>

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-2026-98163>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98163/>. Everything for agents: <https://agentprime.io/llms.txt>.