mailbox: mchp-ipc-sbi: Add null check for devm_kasprintf() (CVE-2026-80822) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80822

mailbox: mchp-ipc-sbi: Add null check for devm_kasprintf()

Answer in brief

CVE-2026-80822 records a Unknown severity vulnerability in mailbox: mchp-ipc-sbi: Add null check for devm_kasprintf(). The current sources do not mark it as known exploited. The current feed maps 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 4, 2026Updated Sep 4, 2026Source checked Sep 4, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <364edaedf4125825781a12c84c77699780d52a16 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df5c9816986b2f4d754ef3aa65a92382e9b39c4a \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b233e7836d98d1790e71f5f3734a86409664f341 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b37c4d0a2fd90c0c31223acd37f763eb8953ed1a \|\| >=0 <6.18.47 \|\| >=0 <7.1.11 \|\| >=0 <7.2.1	364edaedf4125825781a12c84c77699780d52a16, df5c9816986b2f4d754ef3aa65a92382e9b39c4a, b233e7836d98d1790e71f5f3734a86409664f341, b37c4d0a2fd90c0c31223acd37f763eb8953ed1a, 6.18.47, 7.1.11, 7.2.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to 364edaedf4125825781a12c84c77699780d52a16 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: mailbox: mchp-ipc-sbi: Add null check for devm_kasprintf() Add a check to see if devm_kasprintf() is not NULL in mchp_ipc_get_cluster_aggr_irq(), returning -ENOMEM if the function failed.

Quoted source text, attributed separately from HOL analysis.