# net: batman-adv: fix error handling

CVE record · `CVE-2021-47482`

- **Identifiers:** `CVE-2021-47482`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-544](https://cwe.mitre.org/data/definitions/544.html)
- **Tags:** [CWE-544](https://agentprime.io/advisories/tag/cwe-544.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 22 May 2024
- **Updated:** 11 May 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 22 May 2024, 08:19 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: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before 0c6b199f09be489c48622537a550787fc80aea73` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before 07533f1a673ce1126d0a72ef1e4b5eaaa3dd6d20` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before e50f957652190b5a88a8ebce7e5ab14ebd0d3f00` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before fbf150b16a3635634b7dfb7f229d8fcd643c6c51` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before 6422e8471890273994fe8cc6d452b0dcd2c9483e` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before b0a2cd38553c77928ef1646ed1518486b1e70ae8` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before a8f7359259dd5923adc6129284fdad12fc5db347` (git)
  - affected: `c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to before 6f68cd634856f8ca93bafd623ba5357e0f648c68` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.38`
  - unaffected: `before 2.6.38` (semver)
  - unaffected: `4.4.293 to 4.4.*, inclusive` (semver)
  - unaffected: `4.9.289 to 4.9.*, inclusive` (semver)
  - unaffected: `4.14.254 to 4.14.*, inclusive` (semver)
  - unaffected: `4.19.215 to 4.19.*, inclusive` (semver)
  - unaffected: `5.4.157 to 5.4.*, inclusive` (semver)
  - unaffected: `5.10.77 to 5.10.*, inclusive` (semver)
  - unaffected: `5.14.16 to 5.14.*, inclusive` (semver)
  - unaffected: `5.15 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

- 5.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H`, from ADP (CISA-ADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0074, the 54th 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 22 May 2024. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2021-47482](https://www.cve.org/CVERecord?id=CVE-2021-47482)
- [NVD: CVE-2021-47482](https://nvd.nist.gov/vuln/detail/CVE-2021-47482)

### References from the CNA

- <https://git.kernel.org/stable/c/0c6b199f09be489c48622537a550787fc80aea73>
- <https://git.kernel.org/stable/c/07533f1a673ce1126d0a72ef1e4b5eaaa3dd6d20>
- <https://git.kernel.org/stable/c/e50f957652190b5a88a8ebce7e5ab14ebd0d3f00>
- <https://git.kernel.org/stable/c/fbf150b16a3635634b7dfb7f229d8fcd643c6c51>
- <https://git.kernel.org/stable/c/6422e8471890273994fe8cc6d452b0dcd2c9483e>
- <https://git.kernel.org/stable/c/b0a2cd38553c77928ef1646ed1518486b1e70ae8>
- <https://git.kernel.org/stable/c/a8f7359259dd5923adc6129284fdad12fc5db347>
- <https://git.kernel.org/stable/c/6f68cd634856f8ca93bafd623ba5357e0f648c68>

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-2021-47482>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2021-47482/>. Everything for agents: <https://agentprime.io/llms.txt>.