5b954c568a
fix CVE-2022-33065 Signed-off-by: EulerOSWander <314264452@qq.com> (cherry picked from commit 7336ee5c1e53df86d2130c29abac92574dffb709)
44 lines
1.7 KiB
Diff
44 lines
1.7 KiB
Diff
From 0754562e13d2e63a248a1c82f90b30bc0ffe307c Mon Sep 17 00:00:00 2001
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From: Alex Stewart <alex.stewart@ni.com>
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Date: Tue, 10 Oct 2023 16:10:34 -0400
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Subject: [PATCH] mat4/mat5: fix int overflow in dataend calculation
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The clang sanitizer warns of a possible signed integer overflow when
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calculating the `dataend` value in `mat4_read_header()`.
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```
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src/mat4.c:323:41: runtime error: signed integer overflow: 205 * -100663296 cannot be represented in type 'int'
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SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior src/mat4.c:323:41 in
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src/mat4.c:323:48: runtime error: signed integer overflow: 838860800 * 4 cannot be represented in type 'int'
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SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior src/mat4.c:323:48 in
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```
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Cast the offending `rows` and `cols` ints to `sf_count_t` (the type of
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`dataend` before performing the calculation, to avoid the issue.
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CVE: CVE-2022-33065
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Fixes: https://github.com/libsndfile/libsndfile/issues/789
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Fixes: https://github.com/libsndfile/libsndfile/issues/833
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Signed-off-by: Alex Stewart <alex.stewart@ni.com>
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---
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src/mat4.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/mat4.c b/src/mat4.c
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index 0b1b414b..575683ba 100644
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--- a/src/mat4.c
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+++ b/src/mat4.c
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@@ -320,7 +320,7 @@ mat4_read_header (SF_PRIVATE *psf)
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psf->filelength - psf->dataoffset, psf->sf.channels * psf->sf.frames * psf->bytewidth) ;
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}
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else if ((psf->filelength - psf->dataoffset) > psf->sf.channels * psf->sf.frames * psf->bytewidth)
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- psf->dataend = psf->dataoffset + rows * cols * psf->bytewidth ;
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+ psf->dataend = psf->dataoffset + (sf_count_t) rows * (sf_count_t) cols * psf->bytewidth ;
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psf->datalength = psf->filelength - psf->dataoffset - psf->dataend ;
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--
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2.33.0
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