# net/mlx5e: Prevent stale XSK buffer release on refill retry

CVE record · `CVE-2026-99079`

- **Identifiers:** `CVE-2026-99079`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 24 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:23 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `3f93f82988bc6b4104314bf9aa485d47fbb7e241 to before 32bbb870078d467479965c21bbc4960c57eea208` (git)
  - affected: `3f93f82988bc6b4104314bf9aa485d47fbb7e241 to before 34d1db2b18e1c1d189e34dd51923e031815f88e3` (git)
  - affected: `3f93f82988bc6b4104314bf9aa485d47fbb7e241 to before 639522e5056cade578a324acfa993ec6c9f7f5dc` (git)
  - affected: `3f93f82988bc6b4104314bf9aa485d47fbb7e241 to before 655f47477054d19de3b138840be229a1a4490d0c` (git)
  - affected: `3f93f82988bc6b4104314bf9aa485d47fbb7e241 to before e01620844c5c88b6fcf819d171df8e3976a0e76f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.4`
  - unaffected: `before 6.4` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.11 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

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0046, the 39th 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99079](https://www.cve.org/CVERecord?id=CVE-2026-99079)
- [NVD: CVE-2026-99079](https://nvd.nist.gov/vuln/detail/CVE-2026-99079)

### References from the CNA

- <https://git.kernel.org/stable/c/32bbb870078d467479965c21bbc4960c57eea208>
- <https://git.kernel.org/stable/c/34d1db2b18e1c1d189e34dd51923e031815f88e3>
- <https://git.kernel.org/stable/c/639522e5056cade578a324acfa993ec6c9f7f5dc>
- <https://git.kernel.org/stable/c/655f47477054d19de3b138840be229a1a4490d0c>
- <https://git.kernel.org/stable/c/e01620844c5c88b6fcf819d171df8e3976a0e76f>

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-2026-99079>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99079/>. Everything for agents: <https://agentprime.io/llms.txt>.