CVE-2025-71268 Details
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix reservation leak in some error paths when inserting inline extent If we fail to allocate a path or join a transaction, we return from __cow_file_range_inline() without freeing the reserved qgroup data, resulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data() in such cases.
A reservation leak vulnerability has been identified in the Linux kernel's Btrfs file system. This issue arises in versions of the kernel prior to the latest commit that addresses the problem. The vulnerability occurs in the 'cow_file_range_inline' function, where the code fails to free reserved quota group data if path allocation or transaction joining fails. As a result, the leaked data is not properly managed, leading to a resource leak. The vulnerability can be exploited during the inline extent insertion process, where error handling paths do not adequately release reserved resources.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for upgrading the kernel can be found in the official Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/28768bd3abf9995a93f6e01bfce01c60622964dd | kernel.org | Patch |
| https://git.kernel.org/stable/c/28b97fcbbf523779688e8de5fe55bf2dae3859f6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c1c050f92d8f6aac4e17f7f2230160794fceef0c | kernel.org | Patch |
| https://git.kernel.org/stable/c/f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f7156512c8166d385f574b9ec030479aa7b1e8c9 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.4, < 6.1.163 >= 6.2, < 6.6.124 >= 6.7, < 6.12.70 >= 6.13, < 6.18.10 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 21, 2026 | Initial Analysis | [email protected] |
| Mar 18, 2026 | New CVE Received | kernel.org |