In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Disable idle reallow as part of command/gpint execution
[Why]
Workaroud for a race condition where DMCUB is in the process of
committing to IPS1 during the handshake causing us to miss the
transition into IPS2 and touch the INBOX1 RPTR causing a HW hang.
[How]
Disable the reallow to ensure that we have enough of a gap between entry
and exit and we’re not seeing back-to-back wake_and_executes.
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/gpu/drm/amd/display/dc/dc.h",
"drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c"
],
"versions": [
{
"version": "1da177e4c3f4",
"lessThan": "2aac38744561",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "6226a5aa7737",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/gpu/drm/amd/display/dc/dc.h",
"drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c"
],
"versions": [
{
"version": "6.8.6",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]