Bugzilla – Bug 1228061
VUL-0: CVE-2022-48849: kernel: drm/amdgpu: bypass tiling flag check in virtual display case (v2)
Last modified: 2024-07-17 13:15:03 UTC
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: bypass tiling flag check in virtual display case (v2) vkms leverages common amdgpu framebuffer creation, and also as it does not support FB modifier, there is no need to check tiling flags when initing framebuffer when virtual display is enabled. This can fix below calltrace: amdgpu 0000:00:08.0: GFX9+ requires FB check based on format modifier WARNING: CPU: 0 PID: 1023 at drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:1150 amdgpu_display_framebuffer_init+0x8e7/0xb40 [amdgpu] v2: check adev->enable_virtual_display instead as vkms can be enabled in bare metal as well. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48849 https://www.cve.org/CVERecord?id=CVE-2022-48849 https://git.kernel.org/stable/c/cb29021be49858059138f75d6311a7c35a9379b2 https://git.kernel.org/stable/c/e2b993302f40c4eb714ecf896dd9e1c5be7d4cd7 https://git.kernel.org/stable/c/fcd1d79aa943fff4fbaa0cce1d576995a7960699 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-48849.mbox https://bugzilla.redhat.com/show_bug.cgi?id=2298190