avcodec/wmalosslessdec: fix mclms_coeffs* array size Fixes corruption of context Fixes: 8835659dde6a4f7dcdf341de6a45c6c8-signal_sigsegv_1dce67b_4564_cov_2504444599_classical_22_16_1_14000_v3c_0_extend_0_29.wma Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index faba551..f83ba9d 100644 (file) --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -127,8 +127,8 @@ typedef struct WmallDecodeCtx { int8_t mclms_order; int8_t mclms_scaling; - int16_t mclms_coeffs[128]; - int16_t mclms_coeffs_cur[4]; + int16_t mclms_coeffs[WMALL_MAX_CHANNELS * WMALL_MAX_CHANNELS * 32]; + int16_t mclms_coeffs_cur[WMALL_MAX_CHANNELS * WMALL_MAX_CHANNELS]; int16_t mclms_prevvalues[WMALL_MAX_CHANNELS * 2 * 32]; int16_t mclms_updates[WMALL_MAX_CHANNELS * 2 * 32]; int mclms_recent;