CVE-2023-53077

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux6725a88f88a7e922e91c45bf83d320487810c192 < 7257070be70e19a9138f39009c1a26c83a8a7cfaaffected
LinuxLinux6725a88f88a7e922e91c45bf83d320487810c192 < bec1bea2fa974e63f6059c33edde669c7894d0bcaffected
LinuxLinux6725a88f88a7e922e91c45bf83d320487810c192 < a16394b5d661afec9a264fecac3abd87aea439eaaffected
LinuxLinux6725a88f88a7e922e91c45bf83d320487810c192 < e12b95680821b9880cd9992c0f3555389363604faffected
LinuxLinux6725a88f88a7e922e91c45bf83d320487810c192 < 031f196d1b1b6d5dfcb0533b431e3ab1750e6189affected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.176 <= 5.10.*unaffected
LinuxLinux5.15.104 <= 5.15.*unaffected
LinuxLinux6.1.21 <= 6.1.*unaffected
LinuxLinux6.2.8 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

References