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Back to active CVEs
High · CVSS 7.5CVE-2025-71269

btrfs: do not free data reservation in fallback from inline due to -ENOSPCCVE-2025-71269

Answer in brief

CVE-2025-71269 records a High severity (CVSS 7.5) vulnerability in btrfs: do not free data reservation in fallback from inline due to -ENOSPC. 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, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 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>=94ed938aba557aa798acf496f09afb289b619fcd <3edd1f6c7c520536b62b2904807033597554dbac || >=94ed938aba557aa798acf496f09afb289b619fcd <3a9fd45afadec1fbfec72057b9473d509fa8b68c || >=94ed938aba557aa798acf496f09afb289b619fcd <0a1fbbd780f04d1b6cf48dd327c866ba937de1c4 || >=94ed938aba557aa798acf496f09afb289b619fcd <6de3a371a8b9fd095198b1aa68c22cc10a4c6961 || >=94ed938aba557aa798acf496f09afb289b619fcd <f8da41de0bff9eb1d774a7253da0c9f637c4470a3edd1f6c7c520536b62b2904807033597554dbac, 3a9fd45afadec1fbfec72057b9473d509fa8b68c, 0a1fbbd780f04d1b6cf48dd327c866ba937de1c4, 6de3a371a8b9fd095198b1aa68c22cc10a4c6961, f8da41de0bff9eb1d774a7253da0c9f637c4470a
Linux/Linuxgeneric4.4Not 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 3edd1f6c7c520536b62b2904807033597554dbac 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, 2026

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

  2. Source modified

    Oct 16, 2026

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

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • 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: btrfs: do not free data reservation in fallback from inline due to -ENOSPC If we fail to create an inline extent due to -ENOSPC, we will attempt to go through the normal COW path, reserve an extent, create an ordered extent, etc. However we were always freeing the reserved qgroup data, which is wrong since we will use data. Fix this by freeing the reserved qgroup data in __cow_file_range_inline() only if we are not doing the fallback (ret is <= 0).

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 16, 2026
References
5 linked sources
Open source record