# bpf: Enforce regsafe base id consistency for BPF_ADD_CONST scalars

CVE record · `CVE-2026-53081`

- **Identifiers:** `CVE-2026-53081`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-386](https://cwe.mitre.org/data/definitions/386.html)
- **Tags:** [CWE-386](https://agentprime.io/advisories/tag/cwe-386.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Jun 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Jun 2026, 16:30 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: `98d7ca374ba4b39e7535613d40e159f09ca14da2 to before 13c02881e49aac4c82b261faa26db9edf2567231` (git)
  - affected: `98d7ca374ba4b39e7535613d40e159f09ca14da2 to before 691adf738817275368ed56311b7d798d617823a3` (git)
  - affected: `98d7ca374ba4b39e7535613d40e159f09ca14da2 to before 7d73c72cccac651acc891377a5e623e4021c6380` (git)
  - affected: `98d7ca374ba4b39e7535613d40e159f09ca14da2 to before 2f2ec8e7730e21fc9bd49e0de9cdd58213ea24d0` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.11`
  - unaffected: `before 6.11` (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

- 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) (used for this record)
- 6.4 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th 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 24 Jun 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-53081](https://www.cve.org/CVERecord?id=CVE-2026-53081)
- [NVD: CVE-2026-53081](https://nvd.nist.gov/vuln/detail/CVE-2026-53081)

### References from the CNA

- <https://git.kernel.org/stable/c/13c02881e49aac4c82b261faa26db9edf2567231>
- <https://git.kernel.org/stable/c/691adf738817275368ed56311b7d798d617823a3>
- <https://git.kernel.org/stable/c/7d73c72cccac651acc891377a5e623e4021c6380>
- <https://git.kernel.org/stable/c/2f2ec8e7730e21fc9bd49e0de9cdd58213ea24d0>

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-2026-53081>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-53081/>. Everything for agents: <https://agentprime.io/llms.txt>.