Description
In the Linux kernel, the following vulnerability has been resolved: drm/i915: clear CRTC color blob pointers after dropping refs intel_crtc_put_color_blobs() drops the CRTC color blob references, but leaves the corresponding pointers unchanged. This can matter in intel_crtc_prepare_cleared_state(), which frees the old CRTC hw state before calling intel_dp_tunnel_atomic_clear_stream_bw(). The latter can fail while looking up the DP tunnel group state, for example with -EDEADLK. If that happens, the function returns without completing the cleared state preparation. The failed atomic state will then be cleared by the atomic core and intel_crtc_free_hw_state() can be called again for the same state, dropping the same blob references again. Clear the blob pointers after dropping the references so repeated cleanup of the same CRTC hw state is safe. (cherry picked from commit d5005addb5f68e8a0edce249506757bdc9e3d8c8)
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
9a6cbb4a5c168e94a69a0cbec572b3738205232b to < 164afa1a3af8e8c91b4a6d5fd7b79a44ec70abf0affected8581466b827fdf0300a3e2e93900ddefd8240053 to < 2024940522ef451098c940ab0b82d647de5e5d9baffected77fcf58df15edcf3f5b5421f24814fb72796def9 to < ac554ad943610031a25795d6ef71316f6164c136affected77fcf58df15edcf3f5b5421f24814fb72796def9 to < 31f077088e0faae6be8377741f356dea1b94ba46affected674fc4a50b667be65c947d81af63a9367deafb5caffected6.12.80 to < 6.12.97affected6.18.21 to < 6.18.40affected6.19.11 to < 6.20affected
Linux Linux
Default version status: affected
7.0affected0 to < 7.0unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected