CVE-2026-68259

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Check bounds in allocate_event_notification_slot

The valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT

allocate_event_notification_slot has an option to specify an event id to allocate at, used by CRIU. We weren't checking the bounds on that value.

Check them.

v2: Lower bounds check is unecessary because of idr_alloc already rejecting negative numbers. Upper bounds check should be KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might not yet exist

(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < 6884fc142b17f456caac50c14505f509bfbcd012affected
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < 85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53affected
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < 4622214f0542f64b02c250db0f9c677eeb032d9baffected
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < 50319efb865f72db45f191c8709511746d58ee0aaffected
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < abeeb1947d81610c65349db4d89c6151f270e136affected
LinuxLinux40e8a766a761f7fdc8530347527b344fddf6f1a8 < bb52249fbbe948875155ccd45cd8d74bf4ae747baffected
LinuxLinux5.18affected
LinuxLinux0 < 5.18unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References