# bpf: Reject writes through untrusted BTF pointers

CVE record · `CVE-2026-93144`

- **Identifiers:** `CVE-2026-93144`
- **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:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:11 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: `282de143ead96a5d53331e946f31c977b4610a74 to before 56f92fecd80419567288b7972caa90107033836e` (git)
  - affected: `282de143ead96a5d53331e946f31c977b4610a74 to before c4dc883447ae38c4e22a29cc016046fa65d88994` (git)
  - affected: `282de143ead96a5d53331e946f31c977b4610a74 to before 644cf4e77c2770d4246f6d12f99bc80d253b0ec6` (git)
  - affected: `282de143ead96a5d53331e946f31c977b4610a74 to before 19d5566b84ca1af0256d0d0003e1a081580c3ba3` (git)
  - affected: `282de143ead96a5d53331e946f31c977b4610a74 to before ac65c710cc643cbc52b899627577357867249530` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.2`
  - unaffected: `before 6.2` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 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:** 0.0018, the 8th 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93144](https://www.cve.org/CVERecord?id=CVE-2026-93144)
- [NVD: CVE-2026-93144](https://nvd.nist.gov/vuln/detail/CVE-2026-93144)

### References from the CNA

- <https://git.kernel.org/stable/c/56f92fecd80419567288b7972caa90107033836e>
- <https://git.kernel.org/stable/c/c4dc883447ae38c4e22a29cc016046fa65d88994>
- <https://git.kernel.org/stable/c/644cf4e77c2770d4246f6d12f99bc80d253b0ec6>
- <https://git.kernel.org/stable/c/19d5566b84ca1af0256d0d0003e1a081580c3ba3>
- <https://git.kernel.org/stable/c/ac65c710cc643cbc52b899627577357867249530>

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-2026-93144>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93144/>. Everything for agents: <https://agentprime.io/llms.txt>.