High 7.5Published Mar 18, 2026

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

Updated under an hour ago (Oct 26, 2026, 9:00 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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): CWE-416
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 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

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

References

https://git.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbac	patch
https://git.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68c	patch
https://git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4	patch
https://git.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961	patch
https://git.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470a	patch

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.