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commit b0d5e361e950b0e6d2e313d34b8b5de4d9bd4c5d Author: Michael Niedermayer <[email protected]> AuthorDate: Wed May 20 04:00:33 2026 +0200 Commit: Michael Niedermayer <[email protected]> CommitDate: Sat Jun 13 00:18:35 2026 +0200 avcodec/jpeg2000dec: compute mask in decode_clnpass() like in decode_sigpass() Fixes: integer overflow Found by: Jiale Yao Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit 59367afc3d4d86dbe2123c5ff750be7f54f6da7a) Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/jpeg2000dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 0d613e8aa9..1ee1aefa41 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1712,7 +1712,7 @@ static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int seg_symbols, int vert_causal_ctx_csty_symbol) { - int mask = 3 << (bpno - 1), y0, x, y, runlen, dec; + int mask = (3u << bpno)>>1, y0, x, y, runlen, dec; for (y0 = 0; y0 < height; y0 += 4) { for (x = 0; x < width; x++) { _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
