Google Android Kernel Memory io_uring.c memory corruption

Summaryinfo

A vulnerability was found in Google Android. It has been classified as critical. The affected element is an unknown function of the file io_uring.c of the component Kernel Memory Handler. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2023-21400. Local access is required to approach this attack. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (unknown version) and classified as critical. This issue affects an unknown code block of the file io_uring.c of the component Kernel Memory Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In multiple functions of io_uring.c, there is a possible kernel memory corruption due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.

The weakness was disclosed 07/13/2023. It is possible to read the advisory at source.android.com. The identification of this vulnerability is CVE-2023-21400 since 11/03/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/29/2025). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 214732 (Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-7234-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (214732). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

License

• free

Website

• Vendor: https://www.google.com/

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

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