cbcvebase.
CVE-2024-46851
published 2024-09-27

CVE-2024-46851: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid race between dcn10_set_drr() and dc_state_destruct()…

PriorityP416medium4.7CVSS 3.1
AVLACHPRLUINSUCNINAH
EPSS
0.17%
6.7th percentile
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid race between dcn10_set_drr() and dc_state_destruct() dc_state_destruct() nulls the resource context of the DC state. The pipe context passed to dcn10_set_drr() is a member of this resource context. If dc_state_destruct() is called parallel to the IRQ processing (which calls dcn10_set_drr() at some point), we can end up using already nulled function callback fields of struct stream_resource. The logic in dcn10_set_drr() already tries to avoid this, by checking tg against NULL. But if the nulling happens exactly after the NULL check and before the next access, then we get a race. Avoid this by copying tg first to a local variable, and then use this variable for all the operations. This should work, as long as nobody frees the resource pool where the timing generators live. (cherry picked from commit a3cc326a43bdc48fbdf53443e1027a03e309b643)

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.10.11-1 (forky)linux 6.10.11-1 (forky)
linuxlinux
linuxlinux>= 06ad7e16425619a4a77154c2e85bededb3e04a4f < b6ce047a81f508f5c60756db8dfb5ff486e4dad0b6ce047a81f508f5c60756db8dfb5ff486e4dad0
linuxlinux>= 06ad7e16425619a4a77154c2e85bededb3e04a4f < a7aeb03888b92304e2fc7d4d1c242f54a312561ba7aeb03888b92304e2fc7d4d1c242f54a312561b
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 6.7 < 6.10.116.10.11

CVSS provenance

nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu5.5MEDIUM
vendor_debian4.7LOW
vendor_redhat4.7MEDIUM
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