VDB-296994 · CVE-2022-49469 · EUVD-2022-54760

Linux Kernel up to 5.17.13/5.18.2 create_subvol anon_dev memory leak

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5.4	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 5.17.13/5.18.2. Impacted is the function create_subvol. The manipulation of the argument anon_dev results in an unknown weakness. This vulnerability is cataloged as CVE-2022-49469. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.17.13/5.18.2. The manipulation of the argument anon_dev with an unknown input leads to a unknown weakness. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. The impact remains unknown. CVE summarizes:

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.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2022-49469 since 02/26/2025. Technical details are known, but there is no available exploit.

Upgrading to version 5.17.14 or 5.18.3 eliminates this vulnerability. Applying the patch d887b3de318834f9aa637ecf79c6bc66cba7c69a/7a875ad8706f0903a0e812e0dd701956ee9826ff/2256e901f5bddc56e24089c96f27b77da932dfcc is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-54760). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.17.14/5.18.3
Patch: d887b3de318834f9aa637ecf79c6bc66cba7c69a/7a875ad8706f0903a0e812e0dd701956ee9826ff/2256e901f5bddc56e24089c96f27b77da932dfcc

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
10/23/2025 +238 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49469 (🔍)
GCVE (CVE): GCVE-0-2022-49469
GCVE (VulDB): GCVE-100-296994
EUVD: 🔍

Entryinfo

Created: 02/26/2025 09:25
Updated: 10/23/2025 01:02
Changes: 02/26/2025 09:25 (17), 02/26/2025 09:28 (40), 06/19/2025 18:08 (1), 10/23/2025 01:02 (13)
Complete: 🔍
Committer: sany
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.