blk-cgroup: fix list corruption from resetting io stat (CVE-2024-38663) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2024-38663

blk-cgroup: fix list corruption from resetting io stat

Answer in brief

CVE-2024-38663 records a Unknown severity vulnerability in blk-cgroup: fix list corruption from resetting io stat. 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 24, 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	>=3b8cc6298724021da845f2f9fd7dd4b6829a6817 <d4a60298ac34f027a09f8f893fdbd9e06279bb24 \|\| >=3b8cc6298724021da845f2f9fd7dd4b6829a6817 <89bb36c72e1951843f9e04dc84412e31fcc849a9 \|\| >=3b8cc6298724021da845f2f9fd7dd4b6829a6817 <6da6680632792709cecf2b006f2fe3ca7857e791	d4a60298ac34f027a09f8f893fdbd9e06279bb24, 89bb36c72e1951843f9e04dc84412e31fcc849a9, 6da6680632792709cecf2b006f2fe3ca7857e791
Linux/Linuxgeneric	6.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to d4a60298ac34f027a09f8f893fdbd9e06279bb24 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 24, 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: blk-cgroup: fix list corruption from resetting io stat Since commit 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()"), each iostat instance is added to blkcg percpu list, so blkcg_reset_stats() can't reset the stat instance by memset(), otherwise the llist may be corrupted. Fix the issue by only resetting the counter part.

Quoted source text, attributed separately from HOL analysis.