CVE-2025-71269
HIGH severity · CVSS 7.5
7.5CVSS HIGH
Summary
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).
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4Patch
- https://git.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68cPatch
- https://git.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbacPatch
- https://git.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961Patch
- https://git.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470aPatch