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avcodec/jpeglsdec: check err value for ls_get_code_runterm()

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Fixes infinite loop
Fixes Ticket3086

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cc0e47b55096361723b364afa43b79a3f5619cdc)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-10-30 23:27:28 +01:00
parent 683c92adde
commit 84c84204b3
1 changed files with 2 additions and 0 deletions
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libavcodec/jpeglsdec.c
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@ -142,6 +142,8 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
ret = ret >> 1; ret = ret >> 1;
} }
if(FFABS(ret) > 0xFFFF)
return -0x10000;
/* update state */ /* update state */
state->A[Q] += FFABS(ret) - RItype; state->A[Q] += FFABS(ret) - RItype;
ret *= state->twonear; ret *= state->twonear;