What’s Vulnerable › Vulnerabilities

CVE-2023-53077: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-02 · updated 2026-06-17
• Weakness: CWE-787

Description

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.

Affected products

• Linux kernel: from 5.9 before 5.10.176; from 5.11 before 5.15.104; from 5.16 before 6.1.21; from 6.2 before 6.2.8 — fixed in 5.10.176, 5.15.104, 6.1.21, 6.2.8

How to fix

Upgrade to a fixed version: Linux kernel 5.10.176, 5.15.104, 6.1.21, 6.2.8. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/031f196d1b1b6d5dfcb0533b431e3ab1750e6189
• https://git.kernel.org/stable/c/7257070be70e19a9138f39009c1a26c83a8a7cfa
• https://git.kernel.org/stable/c/a16394b5d661afec9a264fecac3abd87aea439ea
• https://git.kernel.org/stable/c/bec1bea2fa974e63f6059c33edde669c7894d0bc
• https://git.kernel.org/stable/c/e12b95680821b9880cd9992c0f3555389363604f

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