bpf: Add missing access_ok call to copy_user_syms (CVE-2026-80865) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80865

bpf: Add missing access_ok call to copy_user_syms

Answer in brief

CVE-2026-80865 records a Unknown severity vulnerability in bpf: Add missing access_ok call to copy_user_syms. 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 4, 2026Updated Sep 4, 2026Source checked Sep 4, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 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	>=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <a67f7f9647cb243b3be32163e88e5bc76e3d51e9 \|\| >=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <8b719cef5ac30ab83ce5693c5faf10e4944874af \|\| >=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <128391b57e0977c35243672a6f970073651f3831 \|\| >=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <0b6252afcd1965f77c6a6f8a802a2e1381822b98 \|\| >=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <28ce7bcf8a29aa395b60764df4c97be745de89d0 \|\| >=0236fec57a15dc2a068dfe4488e0c2ab4559b1ec <d5dc200c3a3f217de072af269dd90adddf90e48d	a67f7f9647cb243b3be32163e88e5bc76e3d51e9, 8b719cef5ac30ab83ce5693c5faf10e4944874af, 128391b57e0977c35243672a6f970073651f3831, 0b6252afcd1965f77c6a6f8a802a2e1381822b98, 28ce7bcf8a29aa395b60764df4c97be745de89d0, d5dc200c3a3f217de072af269dd90adddf90e48d
Linux/Linuxgeneric	5.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to a67f7f9647cb243b3be32163e88e5bc76e3d51e9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the user space pointer. Adding the missing call for the whole pointer array. Plus removing the err check in the error path, because it's not needed and also we can return -ENOMEM directly from the first kvmalloc_array fail path. [1] https://lore.kernel.org/bpf/[email protected]/

Quoted source text, attributed separately from HOL analysis.