xfrm: Fix skb double-free in xfrm_dev_direct_output() (CVE-2026-92489) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92489

xfrm: Fix skb double-free in xfrm_dev_direct_output()

Answer in brief

CVE-2026-92489 records a Unknown severity vulnerability in xfrm: Fix skb double-free in xfrm_dev_direct_output(). 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 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 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	>=bfb9b9404a53a72524ce695551755117e9d3deb0 <621871b696b108026bf4b44ed4085ffa2102f417 \|\| >=a0395e96831adee8ffa016bf958e4dce9ece656e <bc9297796bfdcc8d9609236e54519a4f38737aac \|\| >=5eddd76ec2fd1988f0a3450fde9730b10dd22992 <02deb637e965950148752a304dd1471212dd6470 \|\| >=5eddd76ec2fd1988f0a3450fde9730b10dd22992 <56a347950e661c1a7f8f31c43a2ea53c2323b6f4 \|\| >=5eddd76ec2fd1988f0a3450fde9730b10dd22992 <2aed51fc58d9ce450e2c116efb956160fd06fa02 \|\| d1d673a5bede3767252cff19c0ab1e5387c6f43f \|\| >=6.6.85 <6.6.157 \|\| >=6.12.21 <6.12.110 \|\| >=6.13.9 <6.14	621871b696b108026bf4b44ed4085ffa2102f417, bc9297796bfdcc8d9609236e54519a4f38737aac, 02deb637e965950148752a304dd1471212dd6470, 56a347950e661c1a7f8f31c43a2ea53c2323b6f4, 2aed51fc58d9ce450e2c116efb956160fd06fa02, 6.6.157, 6.12.110, 6.14
Linux/Linuxgeneric	6.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 621871b696b108026bf4b44ed4085ffa2102f417 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix skb double-free in xfrm_dev_direct_output() A return value other than 1 from local_out() means that the skb has been consumed or its ownership was transferred. xfrm_dev_direct_output() nevertheless frees the skb on this path, causing a double-free when netfilter drops the packet and invalidating any other owner. Return the local_out() result directly, matching the ownership handling in xfrm_output_resume().

Quoted source text, attributed separately from HOL analysis.