Unknown severity · Source severity not reportedCVE-2026-43317

most: core: fix leak on early registration failureCVE-2026-43317

Answer in brief

CVE-2026-43317 records a Unknown severity vulnerability in most: core: fix leak on early registration failure. 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 May 8, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 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	>=723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <04474009a2ea7aa27c67d323952a23bb16d5acc5 \|\| >=723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <bbfe49ffb892bddf32c34bea95b7ff0fc30affb5 \|\| >=723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <f1ba620f9e8d7291f80c0554e4b820f5fb30e819 \|\| >=723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <5fd4396c2e48e90cc2597a86c18227d56ea845f0 \|\| >=723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <2c198c272f9c9213b0fdf6b4a879f445c574f416	04474009a2ea7aa27c67d323952a23bb16d5acc5, bbfe49ffb892bddf32c34bea95b7ff0fc30affb5, f1ba620f9e8d7291f80c0554e4b820f5fb30e819, 5fd4396c2e48e90cc2597a86c18227d56ea845f0, 2c198c272f9c9213b0fdf6b4a879f445c574f416
Linux/Linuxgeneric	5.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 04474009a2ea7aa27c67d323952a23bb16d5acc5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 21, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: most: core: fix leak on early registration failure A recent commit fixed a resource leak on early registration failures but for some reason left out the first error path which still leaks the resources associated with the interface. Fix up also the first error path so that the interface is always released on errors.

Quoted source text, attributed separately from HOL analysis.