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.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 5.9 | 5.10.176 |
| linux / linux_kernel | 5.11 | 5.15.104 |
| linux / linux_kernel | 5.16 | 6.1.21 |
| linux / linux_kernel | 6.2 | 6.2.8 |
- 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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