net: devmem: prevent net-iov / page mixing

Answer in brief

CVE-2026-74627 records a Unknown severity vulnerability in net: devmem: prevent net-iov / page mixing. 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	>=bd61848900bff597764238f3a8ec67c815cd316e <e9bfe12b1d04c34c6fedcba21d9709b65c08aa33 \|\| >=bd61848900bff597764238f3a8ec67c815cd316e <ed08011ae0be88f16cceae190535d6c790c83b0c \|\| >=bd61848900bff597764238f3a8ec67c815cd316e <53a43508ee332d8bffe40590c3d189c92a551f9f	e9bfe12b1d04c34c6fedcba21d9709b65c08aa33, ed08011ae0be88f16cceae190535d6c790c83b0c, 53a43508ee332d8bffe40590c3d189c92a551f9f
Linux/Linuxgeneric	6.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to e9bfe12b1d04c34c6fedcba21d9709b65c08aa33 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: net: devmem: prevent net-iov / page mixing We should either have net_iov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopy_fill_skb_from_devmem().

Quoted source text, attributed separately from HOL analysis.