iomap: add a separate bio_set for iomap_split_ioend (CVE-2026-80720) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80720

iomap: add a separate bio_set for iomap_split_ioend

Answer in brief

CVE-2026-80720 records a Unknown severity vulnerability in iomap: add a separate bio_set for iomap_split_ioend. 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 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 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	>=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <cfc686a1174aa904dcad9b9a7c5e46b484d27e4e \|\| >=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <4a869be56e9f6ce7462abcf324ebdefc5de051be \|\| >=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <c679ce3be6cb63763d68ab9b5d9d73ddc0a40762	cfc686a1174aa904dcad9b9a7c5e46b484d27e4e, 4a869be56e9f6ce7462abcf324ebdefc5de051be, c679ce3be6cb63763d68ab9b5d9d73ddc0a40762
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 cfc686a1174aa904dcad9b9a7c5e46b484d27e4e if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: iomap: add a separate bio_set for iomap_split_ioend iomap_split_ioend can split bios that already come from iomap_ioend_bioset and thus deadlock when the bioset is exhausted. Add a separate bio_set to avoid this deadlock. Christian Brauner <[email protected]> says: Mark iomap_ioend_split_bioset static as it is only used in ioend.c, fixing the sparse warning reported by the kernel test robot.

Quoted source text, attributed separately from HOL analysis.