CVE-2026-90035: drm/amd/display: fix division by zero in get_estimated_bw()
Published Sep 16, 2026
·Updated
drm/amd/display: fix division by zero in getestimatedbw()
Affected Software
2 affected componentsFixes available
Linux Kernel
Microsoft azl3 kernel 6.6.152.1-1<6.6.157.1-1
6.6.157.1-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.157.1-1
Event History
Sep 16, 2026
CVE Published
via MITRE·10:33 AM
Data Sourced
via MITRE·10:33 AM
Description
Data Sourced
via NVD·11:17 AM
Description
Sep 17, 2026
Data Sourced
via Microsoft·08:05 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:05 AM
DescriptionSeverity
Frequently Asked Questions
1
Which systems are exposed to this issue?
Systems using the AMD display driver with a connected USB4/DPIA tunneling device are exposed when that device participates in DisplayPort tunneling bandwidth allocation.
2
What sequence triggers the failure?
The device must report an estimated-bandwidth change before it has reported a bandwidth-allocation capability change. In that order, the bandwidth granularity remains zero and the display driver's DPCD interrupt handler can divide by zero.