Linux Kernel up to 5.10.43/5.12.10 wcd934x gpio-wcd934x.c out-of-bounds

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.10.43/5.12.10 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file drivers/gpio/gpio-wcd934x.c of the component wcd934x. Executing a manipulation can lead to out-of-bounds. This vulnerability appears as CVE-2021-47263. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.10.43/5.12.10 and classified as problematic. This vulnerability affects an unknown code of the file drivers/gpio/gpio-wcd934x.c of the component wcd934x. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: gpio: wcd934x: Fix shift-out-of-bounds error bit-mask for pins 0 to 4 is BIT(0) to BIT(4) however we ended up with BIT(n - 1) which is not right, and this was caught by below usban check UBSAN: shift-out-of-bounds in drivers/gpio/gpio-wcd934x.c:34:14

The advisory is available at git.kernel.org. This vulnerability was named CVE-2021-47263 since 05/21/2024. Technical details are known, but there is no available exploit.

Upgrading to version 5.10.44 or 5.12.11 eliminates this vulnerability. Applying the patch e0b518a2eb44/dd55331d493b/dbec64b11c65 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.

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

• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13
• 5.10.14
• 5.10.15
• 5.10.16
• 5.10.17
• 5.10.18
• 5.10.19
• 5.10.20
• 5.10.21
• 5.10.22
• 5.10.23
• 5.10.24
• 5.10.25
• 5.10.26
• 5.10.27
• 5.10.28
• 5.10.29
• 5.10.30
• 5.10.31
• 5.10.32
• 5.10.33
• 5.10.34
• 5.10.35
• 5.10.36
• 5.10.37
• 5.10.38
• 5.10.39
• 5.10.40
• 5.10.41
• 5.10.42
• 5.10.43
• 5.12.0
• 5.12.1
• 5.12.2
• 5.12.3
• 5.12.4
• 5.12.5
• 5.12.6
• 5.12.7
• 5.12.8
• 5.12.9
• 5.12.10

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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

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