# netfilter: x_tables: ensure names are nul-terminated

CVE record · `CVE-2026-43028`

- **Identifiers:** `CVE-2026-43028`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-170](https://cwe.mitre.org/data/definitions/170.html)
- **Tags:** [CWE-170](https://agentprime.io/advisories/tag/cwe-170.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 1 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 1 May 2026, 14:15 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: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before bcac50ea0a29d430eedc5ac87b215393b567baa9` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before ea01c1b219f5a11c66918abaa6f052e5a74041d6` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before aa6cd4a8863391e0a64f62d8922cb0af732a2cf2` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before 673bbd36cba21d10a10f0932f479df7468e26fbb` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before f419bdc205894750f4d3ec042bc87a1b9cde1351` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before 73124608172890306b85f2206d8b3cac20e324f1` (git)
  - affected: `c38c4597e4bf3e99860eac98211748e1ecb0e139 to before a958a4f90ddd7de0800b33ca9d7b886b7d40f74e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.5`
  - unaffected: `before 4.5` (semver)
  - unaffected: `5.10.253 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.203 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.168 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.134 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.81 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.22 to 6.18.*, inclusive` (semver)
  - unaffected: `6.19.12 to 6.19.*, inclusive` (semver)
  - unaffected: `7.0 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0013, the 2nd percentile, on 6 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 1 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-43028](https://www.cve.org/CVERecord?id=CVE-2026-43028)
- [NVD: CVE-2026-43028](https://nvd.nist.gov/vuln/detail/CVE-2026-43028)

### References from the CNA

- <https://git.kernel.org/stable/c/bcac50ea0a29d430eedc5ac87b215393b567baa9>
- <https://git.kernel.org/stable/c/ea01c1b219f5a11c66918abaa6f052e5a74041d6>
- <https://git.kernel.org/stable/c/aa6cd4a8863391e0a64f62d8922cb0af732a2cf2>
- <https://git.kernel.org/stable/c/c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4>
- <https://git.kernel.org/stable/c/673bbd36cba21d10a10f0932f479df7468e26fbb>
- <https://git.kernel.org/stable/c/f419bdc205894750f4d3ec042bc87a1b9cde1351>
- <https://git.kernel.org/stable/c/73124608172890306b85f2206d8b3cac20e324f1>
- <https://git.kernel.org/stable/c/a958a4f90ddd7de0800b33ca9d7b886b7d40f74e>

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-2026-43028>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-43028/>. Everything for agents: <https://agentprime.io/llms.txt>.