net: ravb: avoid dereferencing an invalid PTP clock (CVE-2026-80992) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80992

net: ravb: avoid dereferencing an invalid PTP clock

Answer in brief

CVE-2026-80992 records a Unknown severity vulnerability in net: ravb: avoid dereferencing an invalid PTP clock. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <fc710f89a644e030a7ca15343176ca862fd61b9d \|\| >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <8d4d06d6e2b501cb8e30ed3b1924c470358e8052 \|\| >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <0aaa53936419cf0c19c670387fc6d431e042a1b6 \|\| >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <1f77af0aaf277413ff32f6ff8c2c4282bd64c897	fc710f89a644e030a7ca15343176ca862fd61b9d, 8d4d06d6e2b501cb8e30ed3b1924c470358e8052, 0aaa53936419cf0c19c670387fc6d431e042a1b6, 1f77af0aaf277413ff32f6ff8c2c4282bd64c897
Linux/Linuxgeneric	4.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to fc710f89a644e030a7ca15343176ca862fd61b9d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net: ravb: avoid dereferencing an invalid PTP clock The PTP clock is unavailable before the first open, so querying its index can dereference a NULL pointer. Registration failures can also leave an error pointer in priv->ptp.clock. Cache the PHC index separately and report -1 while no clock is registered. Normalize registration errors to NULL and preserve the static timestamping capabilities.

Quoted source text, attributed separately from HOL analysis.