Unknown severity · Source severity not reportedCVE-2025-40097

ALSA: hda: Fix missing pointer check in hda_component_manager_init function

Answer in brief

CVE-2025-40097 records a Unknown severity vulnerability in ALSA: hda: Fix missing pointer check in hda_component_manager_init function. 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 30, 2025Updated Oct 3, 2026Source checked Oct 3, 2026First seen by HOL Oct 3, 2026Material review Oct 3, 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	>=ae7abe36e352eddf8e30d3b1ea3fb402514ba13b <b044aa6ae63391ba40c93ca5d476d276cb17db1b \|\| >=ae7abe36e352eddf8e30d3b1ea3fb402514ba13b <1c3f4b15eb1850558d7d4da74b98cffbb8121721 \|\| >=ae7abe36e352eddf8e30d3b1ea3fb402514ba13b <218a8504e62fc2c8a1fd12523346b7a2b9bd2474 \|\| >=ae7abe36e352eddf8e30d3b1ea3fb402514ba13b <47d1b9ca923b55c3f407788f1f15b04957e0e027 \|\| >=ae7abe36e352eddf8e30d3b1ea3fb402514ba13b <1cf11d80db5df805b538c942269e05a65bcaf5bc	b044aa6ae63391ba40c93ca5d476d276cb17db1b, 1c3f4b15eb1850558d7d4da74b98cffbb8121721, 218a8504e62fc2c8a1fd12523346b7a2b9bd2474, 47d1b9ca923b55c3f407788f1f15b04957e0e027, 1cf11d80db5df805b538c942269e05a65bcaf5bc
Linux/Linuxgeneric	5.17	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b044aa6ae63391ba40c93ca5d476d276cb17db1b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 30, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 3, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix missing pointer check in hda_component_manager_init function The __component_match_add function may assign the 'matchptr' pointer the value ERR_PTR(-ENOMEM), which will subsequently be dereferenced. The call stack leading to the error looks like this: hda_component_manager_init |-> component_match_add |-> component_match_add_release |-> __component_match_add ( ... ,**matchptr, ... ) |-> *matchptr = ERR_PTR(-ENOMEM); // assign |-> component_master_add_with_match( ... match) |-> component_match_realloc(match, match->num); // dereference Add IS_ERR() check to prevent the crash. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Quoted source text, attributed separately from HOL analysis.