ptp: ocp: Fix board ID over-read

Answer in brief

CVE-2026-74603 records a Unknown severity vulnerability in ptp: ocp: Fix board ID over-read. 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 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 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	>=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <72ef3ce80078199bfad32f98d055f44ba7cd0c3d \|\| >=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <3d965811be78473654e6e8cc8e4fb7b6b87aa6c1 \|\| >=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <f92558bbe78d6284fedd053900f82a70f0aa8707 \|\| >=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <5fd91dd4a143479b0575fb1f202ec1c501e71fd5 \|\| >=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <f8d7e5751267637190eff887c971d5b468106213 \|\| >=0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4 <6b69f2ef10cdb018c0b127a7cab88e590bbddba4	72ef3ce80078199bfad32f98d055f44ba7cd0c3d, 3d965811be78473654e6e8cc8e4fb7b6b87aa6c1, f92558bbe78d6284fedd053900f82a70f0aa8707, 5fd91dd4a143479b0575fb1f202ec1c501e71fd5, f8d7e5751267637190eff887c971d5b468106213, 6b69f2ef10cdb018c0b127a7cab88e590bbddba4
Linux/Linuxgeneric	5.18	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 72ef3ce80078199bfad32f98d055f44ba7cd0c3d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Fix board ID over-read The EEPROM board ID is a fixed 13-byte field and is not guaranteed to contain a NUL terminator. Passing it directly to devlink_info_version_fixed_put() treats it as a C string and may read beyond the field. Format at most OCP_BOARD_ID_LEN bytes into the existing local buffer before reporting the ID. Use a precision limit because the snprintf() output size alone does not bound the source string scan.

Quoted source text, attributed separately from HOL analysis.