Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6725a88f88a7e922e91c45bf83d320487810c192 before 7257070be70e19a9138f39009c1a26c83a8a7cfa; affected 6725a88f88a7e922e91c45bf83d320487810c192 before bec1bea2fa974e63f6059c33edde669c7894d0bc; affected 6725a88f88a7e922e91c45bf83d320487810c192 before a16394b5d661afec9a264fecac3abd87aea439ea; affected 6725a88f88a7e922e91c45bf83d320487810c192 before e12b95680821b9880cd9992c0f3555389363604f; affected 6725a88f88a7e922e91c45bf83d320487810c192 before 031f196d1b1b6d5dfcb0533b431e3ab1750e6189 |
| Linux / Linux | affected 5.9; unaffected 0 before 5.9; unaffected 5.10.176 through 5.10.*; unaffected 5.15.104 through 5.15.*; unaffected 6.1.21 through 6.1.*; unaffected 6.2.8 through 6.2.*; unaffected 6.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7257070be70e19a9138f39009c1a26c83a8a7cfa
- https://git.kernel.org/stable/c/bec1bea2fa974e63f6059c33edde669c7894d0bc
- https://git.kernel.org/stable/c/a16394b5d661afec9a264fecac3abd87aea439ea
- https://git.kernel.org/stable/c/e12b95680821b9880cd9992c0f3555389363604f
- https://git.kernel.org/stable/c/031f196d1b1b6d5dfcb0533b431e3ab1750e6189