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Back to active CVEs
High · CVSS 7.8CVE-2024-26632

block: Fix iterating over an empty bio with bio_for_each_folio_allCVE-2024-26632

Answer in brief

CVE-2024-26632 records a High severity (CVSS 7.8) vulnerability in block: Fix iterating over an empty bio with bio_for_each_folio_all. 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 Mar 18, 2024Updated Aug 5, 2026Source checked Nov 4, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. 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>=640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662 <c6350b5cb78e9024c49eaee6fdb914ad2903a5fe || >=640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662 <a6bd8182137a12d22d3f2cee463271bdcb491659 || >=640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662 <ca3ede3f5893e2d26d4dbdef1eec28a8487fafde || >=640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662 <7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7c6350b5cb78e9024c49eaee6fdb914ad2903a5fe, a6bd8182137a12d22d3f2cee463271bdcb491659, ca3ede3f5893e2d26d4dbdef1eec28a8487fafde, 7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7
Linux/Linuxgeneric5.17Not 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 c6350b5cb78e9024c49eaee6fdb914ad2903a5fe if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Mar 18, 2024

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

  2. Source modified

    Aug 5, 2026

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

  3. First seen by HOL

    Aug 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • 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: block: Fix iterating over an empty bio with bio_for_each_folio_all If the bio contains no data, bio_first_folio() calls page_folio() on a NULL pointer and oopses. Move the test that we've reached the end of the bio from bio_next_folio() to bio_first_folio(). [axboe: add unlikely() to error case]

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 4, 2026
References
4 linked sources
Open source record