CVE-2025-71269btrfs: do not free data reservation in fallback from inline due to -ENOSPC
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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).
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 94ed938aba557aa798acf496f09afb289b619fcd builds before 3edd1f6c7c520536b62b2904807033597554dbac; 94ed938aba557aa798acf496f09afb289b619fcd builds before 3a9fd45afadec1fbfec72057b9473d509fa8b68c; 94ed938aba557aa798acf496f09afb289b619fcd builds before 0a1fbbd780f04d1b6cf48dd327c866ba937de1c4; 94ed938aba557aa798acf496f09afb289b619fcd builds before 6de3a371a8b9fd095198b1aa68c22cc10a4c6961; from 94ed938aba557aa798acf496f09afb289b619fcd before f8da41de0bff9eb1d774a7253da0c9f637c4470a | CNA record |
linux linux_kernel linux:linux_kernel | from 4.4 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.10; 6.19; 6.19; 6.19; 6.19 | NVD |
References
- https://git.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbacpatch
- https://git.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68cpatch
- https://git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4patch
- https://git.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961patch
- https://git.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470apatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.