CVE-2022-49469
btrfs: fix anon_dev leak in create_subvol()
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix anon_dev leak in create_subvol() When btrfs_qgroup_inherit(), btrfs_alloc_tree_block, or btrfs_insert_root() fail in create_subvol(), we return without freeing anon_dev. Reorganize the error handling in create_subvol() to fix this.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
Oct. 22, 2025, 5:22 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to the latest stable version.
- Apply the btrfs specific patch for anon_dev leak.
- Reorganize error handling in create_subvol function.
- Test the updated kernel for stability.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49469.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49469 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49469
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49469 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49469 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 22, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 5.18.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8.3 up to (excluding) 5.17.14 Added Reference Type kernel.org: https://git.kernel.org/stable/c/2256e901f5bddc56e24089c96f27b77da932dfcc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7a875ad8706f0903a0e812e0dd701956ee9826ff Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d887b3de318834f9aa637ecf79c6bc66cba7c69a Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: btrfs: fix anon_dev leak in create_subvol() When btrfs_qgroup_inherit(), btrfs_alloc_tree_block, or btrfs_insert_root() fail in create_subvol(), we return without freeing anon_dev. Reorganize the error handling in create_subvol() to fix this. Added Reference https://git.kernel.org/stable/c/2256e901f5bddc56e24089c96f27b77da932dfcc Added Reference https://git.kernel.org/stable/c/7a875ad8706f0903a0e812e0dd701956ee9826ff Added Reference https://git.kernel.org/stable/c/d887b3de318834f9aa637ecf79c6bc66cba7c69a