# slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()

CVE record · `CVE-2026-90057`

- **Identifiers:** `CVE-2026-90057`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:05 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: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before 9a3b1edff1ecb47d323f2506b3ffc22178acd1c6` (git)
  - affected: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before a2dbac3fb03b4427ccf057debc83fc61ee102529` (git)
  - affected: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before de1f978c0f6ab42b28192d74dc59af52fdc76135` (git)
  - affected: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before ddbc5dc5a2e29b3934da09c1ba3c930fd8a40fd6` (git)
  - affected: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before a540a49fcca59d1c92c3a6462e67ca21676a88df` (git)
  - affected: `5342b77c4123ba39f911d92a813295fb3bb21f69 to before 23c53269f2baaedf2d92784290cb9ef6db2a3bce` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.32`
  - unaffected: `before 2.6.32` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90057](https://www.cve.org/CVERecord?id=CVE-2026-90057)
- [NVD: CVE-2026-90057](https://nvd.nist.gov/vuln/detail/CVE-2026-90057)

### References from the CNA

- <https://git.kernel.org/stable/c/9a3b1edff1ecb47d323f2506b3ffc22178acd1c6>
- <https://git.kernel.org/stable/c/a2dbac3fb03b4427ccf057debc83fc61ee102529>
- <https://git.kernel.org/stable/c/de1f978c0f6ab42b28192d74dc59af52fdc76135>
- <https://git.kernel.org/stable/c/ddbc5dc5a2e29b3934da09c1ba3c930fd8a40fd6>
- <https://git.kernel.org/stable/c/a540a49fcca59d1c92c3a6462e67ca21676a88df>
- <https://git.kernel.org/stable/c/23c53269f2baaedf2d92784290cb9ef6db2a3bce>

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-2026-90057>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90057/>. Everything for agents: <https://agentprime.io/llms.txt>.