CVE-2025-71269 | BDVDB-2026-320954 Detail
LinuxLinux
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).
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-416 Use After Free
References#
- https://git.kernel.org/stable/c/3edd1f6c7c520536b62b2904807033597554dbac
- https://git.kernel.org/stable/c/3a9fd45afadec1fbfec72057b9473d509fa8b68c
- https://git.kernel.org/stable/c/0a1fbbd780f04d1b6cf48dd327c866ba937de1c4
- https://git.kernel.org/stable/c/6de3a371a8b9fd095198b1aa68c22cc10a4c6961
- https://git.kernel.org/stable/c/f8da41de0bff9eb1d774a7253da0c9f637c4470a
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.