Linux Kernel up to 5.15.33/5.16.19/5.17.2 mipi_dbi_poweron_reset_conditional null pointer dereference

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.15.33/5.16.19/5.17.2. Affected by this issue is the function mipi_dbi_poweron_reset_conditional. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2022-49071. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.33/5.16.19/5.17.2. It has been classified as problematic. This affects the function mipi_dbi_poweron_reset_conditional. 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/panel: ili9341: fix optional regulator handling If the optional regulator lookup fails, reset the pointer to NULL. Other functions such as mipi_dbi_poweron_reset_conditional() only do a NULL pointer check and will otherwise dereference the error pointer.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49071 since 02/26/2025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.15.34, 5.16.20 or 5.17.3 eliminates this vulnerability. Applying the patch 28dc1503a9d36654f9c61adb2915682515a30f71/e3d982c111a6c033671dd6084b07f62fbf50f76f/4ea189854b1e625ed5ec80d30147870f984db44c/d14eb80e27795b7b20060f7b151cdfe39722a813 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

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9
• 5.16.10
• 5.16.11
• 5.16.12
• 5.16.13
• 5.16.14
• 5.16.15
• 5.16.16
• 5.16.17
• 5.16.18
• 5.16.19
• 5.17.0
• 5.17.1
• 5.17.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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