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).
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4 Patch
- git.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68c Patch
- git.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbac Patch
- git.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961 Patch
- git.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470a Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 14 · as of 12 November 2026
- CWE
- CWE-416
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