# net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure

CVE record · `CVE-2026-53229`

- **Identifiers:** `CVE-2026-53229`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-401](https://cwe.mitre.org/data/definitions/401.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Jun 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Jun 2026, 08:39 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: `84a0a2310d6de247335574649726cb000c7c0074 to before bf0247d34d79d2740b3f1d6cc44dbd38ab2b169e` (git)
  - affected: `84a0a2310d6de247335574649726cb000c7c0074 to before 3bad189a31eb78575ea69f093e8ef5b7e3e8c832` (git)
  - affected: `84a0a2310d6de247335574649726cb000c7c0074 to before 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1` (git)
  - affected: `84a0a2310d6de247335574649726cb000c7c0074 to before 2789b74ae1f4b68333c9d5eec2f3354d07b16e61` (git)
  - affected: `84a0a2310d6de247335574649726cb000c7c0074 to before 0aabca726b43d833721034e97d99efcc8237b22a` (git)
  - affected: `84a0a2310d6de247335574649726cb000c7c0074 to before b69004f5a6ad32da84d8aa5b23b9c0caafe6252e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.3`
  - unaffected: `before 5.3` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.94 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.36 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.13 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Linux kernel versions from 5.3 onward are affected in the mlx5e driver's XSK XDP_TX path. When a transmit fails, DMA mappings and xdp_frame buffers are leaked. The source gives few details on what an attacker needs. Upgrade to Linux kernel 6.1.191, 6.6.160, 6.12.94, 6.18.36, or a later release.

Written 12 Nov 2026.

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0048, the 41st percentile, on 15 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 25 Jun 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-53229](https://www.cve.org/CVERecord?id=CVE-2026-53229)
- [NVD: CVE-2026-53229](https://nvd.nist.gov/vuln/detail/CVE-2026-53229)

### References from the CNA

- <https://git.kernel.org/stable/c/bf0247d34d79d2740b3f1d6cc44dbd38ab2b169e>
- <https://git.kernel.org/stable/c/3bad189a31eb78575ea69f093e8ef5b7e3e8c832>
- <https://git.kernel.org/stable/c/7b3eeba50fbc3b45f279037c29a87a90e8bac1e1>
- <https://git.kernel.org/stable/c/2789b74ae1f4b68333c9d5eec2f3354d07b16e61>
- <https://git.kernel.org/stable/c/0aabca726b43d833721034e97d99efcc8237b22a>
- <https://git.kernel.org/stable/c/b69004f5a6ad32da84d8aa5b23b9c0caafe6252e>

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-2026-53229>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-53229/>. Everything for agents: <https://agentprime.io/llms.txt>.