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  4. CVE 2026 80720 iomap add a separate bioset for iomapsplitioend
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Back to active CVEs
High · CVSS 7.5CVE-2026-80720

iomap: add a separate bio_set for iomap_split_ioendCVE-2026-80720

Answer in brief

CVE-2026-80720 records a High severity (CVSS 7.5) 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 29, 2026Source checked Oct 12, 2026First seen by HOL Aug 28, 2026Material review Aug 29, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. 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
PackageAffected rangeFixed version
Linux/Linuxgeneric>=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <cfc686a1174aa904dcad9b9a7c5e46b484d27e4e || >=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <4a869be56e9f6ce7462abcf324ebdefc5de051be || >=5fcbd555d48390a8c819ba7fdf55fbfcabe05c80 <c679ce3be6cb63763d68ab9b5d9d73ddc0a40762cfc686a1174aa904dcad9b9a7c5e46b484d27e4e, 4a869be56e9f6ce7462abcf324ebdefc5de051be, c679ce3be6cb63763d68ab9b5d9d73ddc0a40762
Linux/Linuxgeneric6.15Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review 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

  1. Published upstream

    Aug 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 28, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
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.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 12, 2026
References
3 linked sources
Open source record