Buffer overflow in Linux
CVE-2023-53077
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (8.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 6725a88f88a7e922e91c45bf83d320487810c192, 5.9, 0
- Linux Linux_kernel
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-53077?
- CVE-2023-53077 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2025-05-02.
- How severe is CVE-2023-53077?
- High severity. CVSS v3 base score is 7.8 out of 10.