Linux Kernel up to 5.18.2 deadlock

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 5.18.2. Affected by this issue is some unknown functionality. This manipulation causes deadlock. This vulnerability appears as CVE-2022-49531. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.18.2. It has been declared as critical. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a deadlock vulnerability. The CWE definition for the vulnerability is CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: loop: implement ->free_disk Ensure that the lo_device which is stored in the gendisk private data is valid until the gendisk is freed. Currently the loop driver uses a lot of effort to make sure a device is not freed when it is still in use, but to to fix a potential deadlock this will be relaxed a bit soon.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2022-49531 since 02/26/2025. The exploitation appears to be difficult. Neither technical details nor an exploit are publicly available.

Upgrading to version 5.18.3 eliminates this vulnerability. Applying the patch aadd1443aae7fe8956e3b11157827067f034406a/d2c7f56f8b5256d57f9e3fc7794c31361d43bdd9 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.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
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: Deadlock
CWE: CWE-833 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.18.3
Patch: aadd1443aae7fe8956e3b11157827067f034406a/d2c7f56f8b5256d57f9e3fc7794c31361d43bdd9

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
03/18/2025 +20 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49531 (🔍)
GCVE (CVE): GCVE-0-2022-49531
GCVE (VulDB): GCVE-100-297133

Entryinfo

Created: 02/26/2025 10:29
Updated: 03/18/2025 08:47
Changes: 02/26/2025 10:29 (57), 03/18/2025 08:47 (12)
Complete: 🔍
Cache ID: 216::103

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