platform/x86: hp-bioscfg: fix password encoding bounds check (CVE-2026-90137) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90137

platform/x86: hp-bioscfg: fix password encoding bounds check

Answer in brief

CVE-2026-90137 records a Unknown severity vulnerability in platform/x86: hp-bioscfg: fix password encoding bounds check. 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	>=8646a3b5ee3a5b384a22a721f37c24274d974045 <c224759555a13735b0d67561d818cefe00c3309a \|\| >=8646a3b5ee3a5b384a22a721f37c24274d974045 <59fe8491ddaa03a510b352552e6ee291e7ce45d3 \|\| >=8646a3b5ee3a5b384a22a721f37c24274d974045 <ace1ba5fca0ab775b3641e154bcbc3ccde26a71a \|\| >=8646a3b5ee3a5b384a22a721f37c24274d974045 <8a7499b8fd34438c1b11964e0e7ef5bd590fec92 \|\| >=8646a3b5ee3a5b384a22a721f37c24274d974045 <e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615	c224759555a13735b0d67561d818cefe00c3309a, 59fe8491ddaa03a510b352552e6ee291e7ce45d3, ace1ba5fca0ab775b3641e154bcbc3ccde26a71a, 8a7499b8fd34438c1b11964e0e7ef5bd590fec92, e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615
Linux/Linuxgeneric	6.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to c224759555a13735b0d67561d818cefe00c3309a 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: platform/x86: hp-bioscfg: fix password encoding bounds check The password PSWD_ENCODINGS parser reads password_obj[elem + pos_values] while copying the supported password encodings from the ACPI package. The outer loop only guarantees that elem is within password_obj_count. The encoding count is bounded by MAX_ENCODINGS_SIZE, but that does not guarantee that the ACPI package contains enough entries for all elem + pos_values accesses. A malformed package can therefore declare a non-zero encoding count without providing enough string objects, causing the parser to read past the ACPI package array and pass an out-of-bounds string pointer and length to hp_convert_hexstr_to_str(). Add the same computed-index bounds check used by the other offset-based package parsing loops before reading password_obj[elem + pos_values].

Quoted source text, attributed separately from HOL analysis.