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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-98791

net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereferenceCVE-2026-98791

Answer in brief

CVE-2026-98791 records a Unknown severity vulnerability in net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference. 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 Oct 18, 2026Updated Oct 19, 2026Source checked Oct 25, 2026First seen by HOL Oct 18, 2026Material review Oct 19, 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
PackageAffected rangeFixed version
Linux/Linuxgeneric>=ec706a860eba99bf934d59f74b5db90af44e882e <fce70b6bf9f3261e887419a4e7caa25b80fa9d55 || >=ec706a860eba99bf934d59f74b5db90af44e882e <f81d40e2eb69552334f510114f3e6edd0d43178b || >=ec706a860eba99bf934d59f74b5db90af44e882e <63df0ef4c6e3105589e6bb2e758ce611b0ada86c || >=ec706a860eba99bf934d59f74b5db90af44e882e <7b97273cbebe9dd4fddc457f0c4f2a124d0e3996fce70b6bf9f3261e887419a4e7caa25b80fa9d55, f81d40e2eb69552334f510114f3e6edd0d43178b, 63df0ef4c6e3105589e6bb2e758ce611b0ada86c, 7b97273cbebe9dd4fddc457f0c4f2a124d0e3996
Linux/Linuxgeneric6.8Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to fce70b6bf9f3261e887419a4e7caa25b80fa9d55 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 18, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference During XSK TX queue teardown, outstanding descriptors are completed without a CQE. If one requested a TX timestamp, the completion path passes that NULL CQE to mlx5e_xsk_fill_timestamp(), which dereferences it. Return zero when no CQE is available, indicating that teardown did not produce a TX timestamp.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 25, 2026
References
4 linked sources
Open source record