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hasvk: Range check and fail the parse upon lost bit alignment in the slice parser.

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Assisted-by: Claude
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dancingmirrors authored and elwrcl committed 2026-07-21 22:25:25 +03:00
1 parent fac6387b34
commit 4a162aa46b
1 file changed
+8
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src/intel/vulkan_hasvk/anv_video_h264_slice.c
+8
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@@ -529,6 +529,14 @@ anv_h264_parse_slice_header(
} }
} }
/* Let the caller fall back to concealment if the parser lost bit-alignment. */
if (out->slice_alpha_c0_offset_div2 < -6 || out->slice_alpha_c0_offset_div2 > 6 ||
out->slice_beta_offset_div2 < -6 || out->slice_beta_offset_div2 > 6 ||
out->slice_qp_delta < -51 || out->slice_qp_delta > 51 ||
out->disable_deblocking_filter_idc > 2 ||
out->cabac_init_idc > 2)
st.error = true;
VALID_RBSP_OR_BAIL(st) VALID_RBSP_OR_BAIL(st)
if (pps->flags.entropy_coding_mode_flag) { if (pps->flags.entropy_coding_mode_flag) {