bpf: Require a BPF cpumask for bpf_cpumask_populate() (CVE-2026-93112) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93112

bpf: Require a BPF cpumask for bpf_cpumask_populate()

Answer in brief

CVE-2026-93112 records a Unknown severity vulnerability in bpf: Require a BPF cpumask for bpf_cpumask_populate(). 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	>=950ad93df2fce70445e655ed2e74f5c1a8653ab2 <0cfc9348a045da64955af2dd6902e66dfc7d6469 \|\| >=950ad93df2fce70445e655ed2e74f5c1a8653ab2 <b7e2a5c6519adc73be55c3de2cb545e095a0fbc5 \|\| >=950ad93df2fce70445e655ed2e74f5c1a8653ab2 <8740156ad33be5071b588b594c55f279457f667c	0cfc9348a045da64955af2dd6902e66dfc7d6469, b7e2a5c6519adc73be55c3de2cb545e095a0fbc5, 8740156ad33be5071b588b594c55f279457f667c
Linux/Linuxgeneric	6.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 0cfc9348a045da64955af2dd6902e66dfc7d6469 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: bpf: Require a BPF cpumask for bpf_cpumask_populate() bpf_cpumask_populate() writes to its destination with bitmap_copy(), but the destination is typed as struct cpumask *. That allows the verifier to accept borrowed cpumask pointers returned by read-only kfuncs, such as scx_bpf_get_online_cpumask(), as a writable destination. Make the destination a struct bpf_cpumask * so populate follows the same ownership rule as the other mutating cpumask kfuncs. Query kfuncs continue to accept const struct cpumask * inputs.

Quoted source text, attributed separately from HOL analysis.