Linux Kernel up to 5.10.175/5.15.103/6.1.20/6.2.7 dml_log2 out-of-bounds

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.10.175/5.15.103/6.1.20/6.2.7 and classified as problematic. The affected element is the function dml_log2. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2023-53077. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.10.175/5.15.103/6.1.20/6.2.7 and classified as problematic. This issue affects the function dml_log2. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes [WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value: shift exponent 4294966273 is too large for 32-bit type 'int' [HOW] In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2023-53077 since 05/02/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 249933 (Linux Distros Unpatched Vulnerability : CVE-2023-53077), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.176, 5.15.104, 6.1.21 or 6.2.8 eliminates this vulnerability. Applying the patch 7257070be70e19a9138f39009c1a26c83a8a7cfa/bec1bea2fa974e63f6059c33edde669c7894d0bc/a16394b5d661afec9a264fecac3abd87aea439ea/e12b95680821b9880cd9992c0f3555389363604f/031f196d1b1b6d5dfcb0533b431e3ab1750e6189 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 databases at Tenable (249933) and EUVD (EUVD-2025-13181). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.175
• 5.15.103
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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