Linux Kernel up to 5.18.2 mdp5_mixer_release null pointer dereference

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5.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 5.18.2. This impacts the function mdp5_mixer_release. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2022-49488. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.18.2. This affects the function mdp5_mixer_release. 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected There is a possibility for mdp5_get_global_state to return -EDEADLK when acquiring the modeset lock, but currently global_state in mdp5_mixer_release doesn't check for if an error is returned. To avoid a NULL dereference error, let's have mdp5_mixer_release check if an error is returned and propagate that error. Patchwork: https://patchwork.freedesktop.org/patch/485181/

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49488 since 02/26/2025. The exploitability is told to be difficult. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 234545 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:1293-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.247, 5.4.198, 5.10.121, 5.15.46, 5.17.14 or 5.18.3 eliminates this vulnerability. Applying the patch 1a5d1474026ea4f1a6f931075ca2adb884af39cf/22d8424913b1348c6324916745fadaeea5273f0e/883f1d52a57bf51e1d7a80c432345e2c6222477e/09bdeedc1fc53e64b8282e1de67752c69e43bdba/47e393061049aff6818d1b9fdca7351411a23fc2/46e5ce63924a96af452c4fc5ee0bb3b241e1b9f4/ca75f6f7c6f89365e40f10f641b15981b1f07c31 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 (234545). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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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: 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: 234545
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:1293-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.247/5.4.198/5.10.121/5.15.46/5.17.14/5.18.3
Patch: 1a5d1474026ea4f1a6f931075ca2adb884af39cf/22d8424913b1348c6324916745fadaeea5273f0e/883f1d52a57bf51e1d7a80c432345e2c6222477e/09bdeedc1fc53e64b8282e1de67752c69e43bdba/47e393061049aff6818d1b9fdca7351411a23fc2/46e5ce63924a96af452c4fc5ee0bb3b241e1b9f4/ca75f6f7c6f89365e40f10f641b15981b1f07c31

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-2022-49488 (🔍)
GCVE (CVE): GCVE-0-2022-49488
GCVE (VulDB): GCVE-100-297075

Entryinfo

Created: 02/26/2025 10:09
Updated: 10/23/2025 01:02
Changes: 02/26/2025 10:09 (58), 04/17/2025 16:47 (2), 10/23/2025 01:02 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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