soundwire: fix bug in sdw_add_element_group_count found by syzkaller (CVE-2026-72488) | HOL Guard CVE

High · CVSS 7.8CVE-2026-72488

soundwire: fix bug in sdw_add_element_group_count found by syzkaller

Answer in brief

CVE-2026-72488 records a High severity (CVSS 7.8) vulnerability in soundwire: fix bug in sdw_add_element_group_count found by syzkaller. 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 Aug 15, 2026Updated Aug 17, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. 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	>=9026118f20e28f202dab34f219bbb831ffb8c4dc <a454f61747c97e2eadaa7a35ffc1f4b1645c6a53 \|\| >=9026118f20e28f202dab34f219bbb831ffb8c4dc <e483a406a23a92d5202e8d324f206e127eef48ff \|\| >=9026118f20e28f202dab34f219bbb831ffb8c4dc <f772ff5a0e6758fd412803c09e03ba3bca5f5878	a454f61747c97e2eadaa7a35ffc1f4b1645c6a53, e483a406a23a92d5202e8d324f206e127eef48ff, f772ff5a0e6758fd412803c09e03ba3bca5f5878
Linux/Linuxgeneric	5.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to a454f61747c97e2eadaa7a35ffc1f4b1645c6a53 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: soundwire: fix bug in sdw_add_element_group_count found by syzkaller The original implementation caused an out-of-bounds memory access in the sdw_add_element_group_count for-loop when i == num. for (i = 0; i <= num; i++) { if (rate == group->rates[i] && lane == group->lanes[i]) ... To fix this error, the function now checks for existing rate/lane entries in the group(a function parameter) using a for-loop before adding them. No functional changes apart from this fix.

Quoted source text, attributed separately from HOL analysis.