CVE-2026-46216
published 2026-05-28CVE-2026-46216: In the Linux kernel, the following vulnerability has been resolved: drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status() When media GT is…
medium5.5
In the Linux kernel, the following vulnerability has been resolved:
drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()
When media GT is disabled via configfs, there is no allocation for
media_gt, which is kept as NULL. In such scenario,
intel_hdcp_gsc_check_status() results in a kernel pagefault error due to
>->uc.gsc being evaluated as an invalid memory address.
Fix that by introducing a NULL check on media_gt and bailing out early
if so.
While at it, also drop the NULL check for gsc, since it can't be NULL if
media_gt is not NULL.
v2:
- Get address for gsc only after checking that gt is not NULL.
(Shuicheng)
- Drop the NULL check for gsc. (Shuicheng)
v3:
- Add "Fixes" and "Cc: " tags. (Matt)
(cherry picked from commit bfaf87e84ca3ca3f6e275f9ae56da47a8b55ffd1)
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 < cad210d2851f3a7d9573bdfc02aa61d9287bbe8c | cad210d2851f3a7d9573bdfc02aa61d9287bbe8c |
| linux | linux | >= 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 < 814326e86e929b865020ff44f4576dbdfe3f7ff3 | 814326e86e929b865020ff44f4576dbdfe3f7ff3 |
| linux | linux | >= 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 < d8ab4b47edf4578dbfbe5e95817107a514fa34cc | d8ab4b47edf4578dbfbe5e95817107a514fa34cc |
| linux | linux | >= 4af50beb4e0f9e6aed9cd53436c099f1dba826f1 < 60a1e131a811b68703da58fd805ab359b704ab03 | 60a1e131a811b68703da58fd805ab359b704ab03 |
| linux | linux_kernel | — | — |