# slip: bound decode() reads against the compressed packet length

CVE record · `CVE-2026-45843`

- **Identifiers:** `CVE-2026-45843`
- **State:** Confirmed
- **Severity:** CVSS 8.2 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-126](https://cwe.mitre.org/data/definitions/126.html)
- **Tags:** [CWE-126](https://agentprime.io/advisories/tag/cwe-126.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 27 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 27 May 2026, 09:24 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6268f01ae989013671b526c883e92655342c6f6f` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9aafba2f49e1fcccc2018816f5836a609c925879` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 335957df4ed60f02a2ec0432fbedbf0cc7241d8b` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 37537e42e6df387398bee85cb85070cc80bb1e10` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4cefe32639933d652614b0bd50f818f9af4af78f` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0511ecb00e61bf28e2fec4bb41fcce385c3a3b2d` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before d42bec6e4f6d6d658be365539400b3314b76b2a7` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4c1367a2d7aad643a6f87c6931b13cc1a25e8ca7` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.258 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.209 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.175 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.141 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.91 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.33 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.10 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0040, the 34th percentile, on 7 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 27 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-45843](https://www.cve.org/CVERecord?id=CVE-2026-45843)
- [NVD: CVE-2026-45843](https://nvd.nist.gov/vuln/detail/CVE-2026-45843)

### References from the CNA

- <https://git.kernel.org/stable/c/6268f01ae989013671b526c883e92655342c6f6f>
- <https://git.kernel.org/stable/c/9aafba2f49e1fcccc2018816f5836a609c925879>
- <https://git.kernel.org/stable/c/335957df4ed60f02a2ec0432fbedbf0cc7241d8b>
- <https://git.kernel.org/stable/c/37537e42e6df387398bee85cb85070cc80bb1e10>
- <https://git.kernel.org/stable/c/4cefe32639933d652614b0bd50f818f9af4af78f>
- <https://git.kernel.org/stable/c/0511ecb00e61bf28e2fec4bb41fcce385c3a3b2d>
- <https://git.kernel.org/stable/c/d42bec6e4f6d6d658be365539400b3314b76b2a7>
- <https://git.kernel.org/stable/c/4c1367a2d7aad643a6f87c6931b13cc1a25e8ca7>

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-2026-45843>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-45843/>. Everything for agents: <https://agentprime.io/llms.txt>.