PR #23165 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23165 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23165.patch
Fixes: integer overflow Found by: Jiale Yao Signed-off-by: Michael Niedermayer <[email protected]> >From efa42f0bfedb7a0bc786f817550721e4d35c5f4d Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Wed, 20 May 2026 04:00:33 +0200 Subject: [PATCH] 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]> --- libavcodec/jpeg2000dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index c5682829b6..01c025235e 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1960,7 +1960,7 @@ static void decode_clnpass(const Jpeg2000DecoderContext *s, Jpeg2000T1Context *t 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++) { -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
