Linux Kernel up to 6.0.8 btrfs_device null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.0.8. This impacts the function btrfs_device. The manipulation results in null pointer dereference. This vulnerability was named CVE-2022-49833. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.0.8. Affected is the function btrfs_device. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: clone zoned device info when cloning a device When cloning a btrfs_device, we're not cloning the associated btrfs_zoned_device_info structure of the device in case of a zoned filesystem. Later on this leads to a NULL pointer dereference when accessing the device's zone_info for instance when setting a zone as active. This was uncovered by fstests' testcase btrfs/161.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-49833 since 05/01/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 247358 (Linux Distros Unpatched Vulnerability : CVE-2022-49833), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.0.9 eliminates this vulnerability. Applying the patch ad88cabcec942c033f980cd1e28d56ecdaf5f3b8/21e61ec6d0bb786818490e926aa9aeb4de95ad0d 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 Tenable (247358). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 247358
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-49833

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.0.9
Patch: ad88cabcec942c033f980cd1e28d56ecdaf5f3b8/21e61ec6d0bb786818490e926aa9aeb4de95ad0d

Timelineinfo

05/01/2025 🔍
05/01/2025 +0 days 🔍
05/01/2025 +0 days 🔍
11/10/2025 +193 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49833 (🔍)
GCVE (CVE): GCVE-0-2022-49833
GCVE (VulDB): GCVE-100-307008

Entryinfo

Created: 05/01/2025 17:39
Updated: 11/10/2025 23:28
Changes: 05/01/2025 17:39 (58), 08/11/2025 01:26 (2), 11/10/2025 23:28 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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