Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: Disable MMIO access during SMU Mode 1 reset During Mode 1 reset, the ASIC undergoes a reset cycle and becomes temporarily inaccessible via PCIe. Any attempt to access MMIO registers during this window (e.g., from interrupt handlers or other driver threads) can result in uncompleted PCIe transactions, leading to NMI panics or system hangs. To prevent this, set the `no_hw_access` flag to true immediately after triggering the reset. This signals other driver components to skip register accesses while the device is offline. A memory barrier `smp_mb()` is added to ensure the flag update is globally visible to all cores before the driver enters the sleep/wait state. (cherry picked from commit 7edb503fe4b6d67f47d8bb0dfafb8e699bb0f8a4)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ea8139d8d59bd6f014b317e7423345169a56fe49 to < b2b9ac2bb2c5b5b0a39f7f422bbe12d3ea4ccf34affectedea8139d8d59bd6f014b317e7423345169a56fe49 to < c1853ebbec980d5c05d431bfd6ded73b1363fd00affectedea8139d8d59bd6f014b317e7423345169a56fe49 to < cd7ff7fd3e4b77f0b5a292e0926532eaa07c5162affectedea8139d8d59bd6f014b317e7423345169a56fe49 to < 0de604d0357d0d22cbf03af1077d174b641707b6affected
Linux Linux
Default version status: affected
5.9affected0 to < 5.9unaffected6.6.160 to ≤ 6.6.*unaffected6.12.70 to ≤ 6.12.*unaffected6.18.10 to ≤ 6.18.*unaffected6.19 to ≤ *unaffected