# bpf: Disable preemption in \_\_bpf_get_stack

CVE record · `CVE-2026-89580`

- **Identifiers:** `CVE-2026-89580`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 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: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before 68eebc89c5ab5a8f9281773f35e49c83940450a0` (git)
  - affected: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before 719e69421de28829c72bf8a2722ab48a1c5a59ad` (git)
  - affected: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before 8c5ba022f2085ea42d011497a6e92e527d123b9b` (git)
  - affected: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before dbfecc8a6631c0d3626c14ba1f1a485a4498445a` (git)
  - affected: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before 9a23747909fcae707990c8466c381a0e7acfaa4e` (git)
  - affected: `c195651e565ae7f41a68acb7d4aa7390ad215de1 to before b1a47b2708d4e95dbd23aee2ec83752190897b3f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.18`
  - unaffected: `before 4.18` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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:** 0.0013, the 2nd percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89580](https://www.cve.org/CVERecord?id=CVE-2026-89580)
- [NVD: CVE-2026-89580](https://nvd.nist.gov/vuln/detail/CVE-2026-89580)

### References from the CNA

- <https://git.kernel.org/stable/c/68eebc89c5ab5a8f9281773f35e49c83940450a0>
- <https://git.kernel.org/stable/c/719e69421de28829c72bf8a2722ab48a1c5a59ad>
- <https://git.kernel.org/stable/c/8c5ba022f2085ea42d011497a6e92e527d123b9b>
- <https://git.kernel.org/stable/c/dbfecc8a6631c0d3626c14ba1f1a485a4498445a>
- <https://git.kernel.org/stable/c/9a23747909fcae707990c8466c381a0e7acfaa4e>
- <https://git.kernel.org/stable/c/b1a47b2708d4e95dbd23aee2ec83752190897b3f>

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-2026-89580>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89580/>. Everything for agents: <https://agentprime.io/llms.txt>.