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home:Alexander_Naumov:SLE-12:Update
libsndfile.4961
0001-src-id3.c-Fix-a-stack-overflow-when-parsin...
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File 0001-src-id3.c-Fix-a-stack-overflow-when-parsing-a-file-w.patch of Package libsndfile.4961
From 41da64d9270b2fa10c93ce74dea014fe8f0bd303 Mon Sep 17 00:00:00 2001 From: Erik de Castro Lopo <erikd@mega-nerd.com> Date: Sat, 5 Nov 2011 09:49:14 +1100 Subject: [PATCH] src/id3.c : Fix a stack overflow when parsing a file with multiple ID3 headers. --- src/id3.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- a/src/id3.c +++ b/src/id3.c @@ -40,11 +40,16 @@ id3_skip (SF_PRIVATE * psf) offset = (offset << 7) | (buf [8] & 0x7f) ; offset = (offset << 7) | (buf [9] & 0x7f) ; - psf_binheader_readf (psf, "j", make_size_t (offset)) ; - psf_log_printf (psf, "ID3 length : %d\n--------------------\n", offset) ; - psf->fileoffset = 10 + offset ; + /* Never want to jump backwards in a file. */ + if (offset < 0) + return 0 ; + + /* Calculate new file offset and position ourselves there. */ + psf->fileoffset += offset + 10 ; + psf_binheader_readf (psf, "p", psf->fileoffset) ; + return 1 ; } ;
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