# ring-buffer: Add checking nr_subbufs to persistent ring buffer validation

CVE record · `CVE-2026-98057`

- **Identifiers:** `CVE-2026-98057`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:24 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: `3ec743d558f111d8999aea24577ba66c65ee2eeb to before f0467190e6a9fc61e343c8064ef16aad513788c3` (git)
  - affected: `f5b95f1fa2ef3a03f49eeec658ba97e721412b32 to before 364a31052aa9ef91db137f82d797366007cd85b7` (git)
  - affected: `f5b95f1fa2ef3a03f49eeec658ba97e721412b32 to before 69d502457e3f76142f7fcf6e2625e80e0ce8a60f` (git)
  - affected: `f5b95f1fa2ef3a03f49eeec658ba97e721412b32 to before 6c001a62c34f13fe1c6a24304c289b387d9e697d` (git)
  - affected: `0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf` (git)
  - affected: `6.12.16 to before 6.12.111` (semver)
  - affected: `6.13.4 to before 6.14` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.14`
  - unaffected: `before 6.14` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 12 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98057](https://www.cve.org/CVERecord?id=CVE-2026-98057)
- [NVD: CVE-2026-98057](https://nvd.nist.gov/vuln/detail/CVE-2026-98057)

### References from the CNA

- <https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3>
- <https://git.kernel.org/stable/c/364a31052aa9ef91db137f82d797366007cd85b7>
- <https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f>
- <https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d>

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-2026-98057>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98057/>. Everything for agents: <https://agentprime.io/llms.txt>.