CVE-2026-68259
Description
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)
How to fix
- Linux Linux6884fc142b17f456caac50c14505f509bfbcd012, 85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53, 4622214f0542f64b02c250db0f9c677eeb032d9b, 50319efb865f72db45f191c8709511746d58ee0a, abeeb1947d81610c65349db4d89c6151f270e136, bb52249fbbe948875155ccd45cd8d74bf4ae747b or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < 6884fc142b17f456caac50c14505f509bfbcd012, 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < 85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53, 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < 4622214f0542f64b02c250db0f9c677eeb032d9b, 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < 50319efb865f72db45f191c8709511746d58ee0a, 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < abeeb1947d81610c65349db4d89c6151f270e136, 40e8a766a761f7fdc8530347527b344fddf6f1a8 ≤ v < bb52249fbbe948875155ccd45cd8d74bf4ae747b, 5.18 | 6884fc142b17f456caac50c14505f509bfbcd012, 85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53, 4622214f0542f64b02c250db0f9c677eeb032d9b, 50319efb865f72db45f191c8709511746d58ee0a, abeeb1947d81610c65349db4d89c6151f270e136, bb52249fbbe948875155ccd45cd8d74bf4ae747b |
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