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Fix vuln OSV-2024-1124 #111

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Fix vuln OSV-2024-1124 #111

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8 changes: 8 additions & 0 deletions decoder/ih264d_parse_cabac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,10 @@ UWORD8 ih264d_read_coeff4x4_cabac(dec_bit_stream_t *ps_bitstrm,

ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data;
ps_tu_4x4->u2_sig_coeff_map = 0;

/* Safety: Ensure offset is within permissible bounds */
if (EXCEED_OFFSET(ps_bitstrm))
return 0;
pi2_coeff_data = &ps_tu_4x4->ai2_level[0];

u4_offset = ps_bitstrm->u4_ofst;
Expand Down Expand Up @@ -132,6 +136,10 @@ UWORD8 ih264d_read_coeff4x4_cabac(dec_bit_stream_t *ps_bitstrm,

}

/* Safety: Check before further processing */
if (EXCEED_OFFSET(ps_bitstrm))
return 0;

if(u4_coded_flag)
{

Expand Down