# hwrng: core - fix rng list on registration error

CVE record · `CVE-2026-93163`

- **Identifiers:** `CVE-2026-93163`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 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: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before 30b2cc2966dac87ee95a99c49e28486c2a8129cd` (git)
  - affected: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before e37c67f768234e14cd6ea3b081568dd915c5b67e` (git)
  - affected: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before de4f1bcb61a73cc896decdbd27d61a34add93b53` (git)
  - affected: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before cf293c9c7424de0d04b51367d07f40570ce80231` (git)
  - affected: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before bee8d1fcdc8f389b595b0a4cf6fe8440f499458a` (git)
  - affected: `2bbb6983887fefc8026beab01198d30f47b7bd22 to before 3a5834db2b1ce25649f330e78efe1ccde78967fd` (git)
  - affected: `42802952a2725f85f7e36ee3b29593af5fe87197` (git)
  - affected: `4.9.320 to before 4.10` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.14`
  - unaffected: `before 4.14` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 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

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Linux kernel hwrng core is affected from version 4.14 until fixed. When hwrng_register() fails after adding a device to the global list, the device stays listed, which can cause a use-after-free if the caller frees it. The source does not state what access an attacker needs. Upgrade to 6.1.191, 6.6.160, 6.12.110, 6.18.52, or a later release in those series.

Written 12 Nov 2026.

## 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:** 0.0021, the 11th 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-2026-93163](https://www.cve.org/CVERecord?id=CVE-2026-93163)
- [NVD: CVE-2026-93163](https://nvd.nist.gov/vuln/detail/CVE-2026-93163)

### References from the CNA

- <https://git.kernel.org/stable/c/30b2cc2966dac87ee95a99c49e28486c2a8129cd>
- <https://git.kernel.org/stable/c/e37c67f768234e14cd6ea3b081568dd915c5b67e>
- <https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53>
- <https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231>
- <https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a>
- <https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd>

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-2026-93163>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93163/>. Everything for agents: <https://agentprime.io/llms.txt>.