efi: libstub: only free priv.runtime_map when allocated (CVE-2024-33619) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2024-33619

efi: libstub: only free priv.runtime_map when allocated

Answer in brief

CVE-2024-33619 records a Unknown severity vulnerability in efi: libstub: only free priv.runtime_map when allocated. 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 Jun 21, 2024Updated Aug 5, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 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	>=f80d26043af91ceb5036c478101c015edb9e7630 <b8938d6f570f010a1dcdbfed3e5b5d3258c2a908 \|\| >=f80d26043af91ceb5036c478101c015edb9e7630 <9dce01f386c9ce6990c0a83fa14b1c95330b037e \|\| >=f80d26043af91ceb5036c478101c015edb9e7630 <6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554 \|\| >=f80d26043af91ceb5036c478101c015edb9e7630 <4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974	b8938d6f570f010a1dcdbfed3e5b5d3258c2a908, 9dce01f386c9ce6990c0a83fa14b1c95330b037e, 6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554, 4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974
Linux/Linuxgeneric	6.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b8938d6f570f010a1dcdbfed3e5b5d3258c2a908 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 21, 2024
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: efi: libstub: only free priv.runtime_map when allocated priv.runtime_map is only allocated when efi_novamap is not set. Otherwise, it is an uninitialized value. In the error path, it is freed unconditionally. Avoid passing an uninitialized value to free_pool. Free priv.runtime_map only when it was allocated. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.

Quoted source text, attributed separately from HOL analysis.