Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Open-code GGTT MMIO access protection GGTT MMIO access is currently protected by hotplug (drm_dev_enter), which works correctly when the driver loads successfully and is later unbound or unloaded. However, if driver load fails, this protection is insufficient because drm_dev_unplug() is never called. Additionally, devm release functions cannot guarantee that all BOs with GGTT mappings are destroyed before the GGTT MMIO region is removed, as some BOs may be freed asynchronously by worker threads. To address this, introduce an open-coded flag, protected by the GGTT lock, that guards GGTT MMIO access. The flag is cleared during the dev_fini_ggtt devm release function to ensure MMIO access is disabled once teardown begins. (cherry picked from commit 4f3a998a173b4325c2efd90bdadc6ccd3ad9a431)
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
919bb54e989c1edef87e9797be125c94c450fc65 to < e2b424aadecb640f9e037b2891191cf8fd4c64cfaffected919bb54e989c1edef87e9797be125c94c450fc65 to < 1e9e2640d870d4837bcfdc220cb2c99ae5ee119faffected919bb54e989c1edef87e9797be125c94c450fc65 to < 76326dc06d8793c2c81c31cc0115dbc348de2f88affected919bb54e989c1edef87e9797be125c94c450fc65 to < 01f2557aa684e514005541e71a3d01f4cd45c170affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.78 to ≤ 6.12.*unaffected6.18.20 to ≤ 6.18.*unaffected6.19.10 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected