a8e149434e
Patches should fix all CVEs reported by `guix lint`: CVE-2015-7747; CVE-2017-6827, CVE-2017-6828, CVE-2017-6829, CVE-2017-6830, CVE-2017-6831, CVE-2017-6832, CVE-2017-6833, CVE-2017-6834, CVE-2017-6835, CVE-2017-6836, CVE-2017-6837, CVE-2017-6838, CVE-2017-6839; CVE-2018-13440; CVE-2018-17095 Since the patches do not reference to CVEs, it's a bit hard to tell which patch actually closes which CVE. Debian reports all these to be closed by the patches below and NixPkgs provides references. * gnu/packages/audio.scm (audiofile): New variable. * gnu/packages/patches/audiofile-fix-datatypes-in-tests.patch, gnu/packages/patches/audiofile-fix-sign-conversion.patch, gnu/packages/patches/audiofile-CVE-2015-7747.patch, gnu/packages/patches/audiofile-CVE-2018-13440.patch, gnu/packages/patches/audiofile-CVE-2018-17095.patch, gnu/packages/patches/audiofile-Check-the-number-of-coefficients.patch, gnu/packages/patches/audiofile-Fail-on-error-in-parseFormat.patch, gnu/packages/patches/audiofile-Fix-index-overflow-in-IMA.cpp.patch, gnu/packages/patches/audiofile-Fix-multiply-overflow-sfconvert.patch, gnu/packages/patches/audiofile-Fix-overflow-in-MSADPCM-decodeSam.patch, gnu/packages/patches/audiofile-division-by-zero-BlockCodec-runPull.patch, gnu/packages/patches/audiofile-hurd.patch, gnu/packages/patches/audiofile-signature-of-multiplyCheckOverflow.patch: New files. * gnu/local.mk: Add them.
66 lines
1.9 KiB
Diff
66 lines
1.9 KiB
Diff
From: Antonio Larrosa <larrosa@kde.org>
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Date: Mon, 6 Mar 2017 13:54:52 +0100
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Subject: Check for multiplication overflow in sfconvert
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Checks that a multiplication doesn't overflow when
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calculating the buffer size, and if it overflows,
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reduce the buffer size instead of failing.
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This fixes the 00192-audiofile-signintoverflow-sfconvert case
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in #41
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---
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sfcommands/sfconvert.c | 34 ++++++++++++++++++++++++++++++++--
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1 file changed, 32 insertions(+), 2 deletions(-)
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diff --git a/sfcommands/sfconvert.c b/sfcommands/sfconvert.c
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index 80a1bc4..970a3e4 100644
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--- a/sfcommands/sfconvert.c
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+++ b/sfcommands/sfconvert.c
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@@ -45,6 +45,33 @@ void printusage (void);
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void usageerror (void);
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bool copyaudiodata (AFfilehandle infile, AFfilehandle outfile, int trackid);
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+int firstBitSet(int x)
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+{
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+ int position=0;
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+ while (x!=0)
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+ {
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+ x>>=1;
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+ ++position;
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+ }
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+ return position;
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+}
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+
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+#ifndef __has_builtin
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+#define __has_builtin(x) 0
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+#endif
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+
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+int multiplyCheckOverflow(int a, int b, int *result)
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+{
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+#if (defined __GNUC__ && __GNUC__ >= 5) || ( __clang__ && __has_builtin(__builtin_mul_overflow))
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+ return __builtin_mul_overflow(a, b, result);
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+#else
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+ if (firstBitSet(a)+firstBitSet(b)>31) // int is signed, so we can't use 32 bits
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+ return true;
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+ *result = a * b;
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+ return false;
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+#endif
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+}
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+
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int main (int argc, char **argv)
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{
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if (argc == 2)
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@@ -323,8 +350,11 @@ bool copyaudiodata (AFfilehandle infile, AFfilehandle outfile, int trackid)
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{
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int frameSize = afGetVirtualFrameSize(infile, trackid, 1);
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- const int kBufferFrameCount = 65536;
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- void *buffer = malloc(kBufferFrameCount * frameSize);
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+ int kBufferFrameCount = 65536;
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+ int bufferSize;
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+ while (multiplyCheckOverflow(kBufferFrameCount, frameSize, &bufferSize))
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+ kBufferFrameCount /= 2;
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+ void *buffer = malloc(bufferSize);
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AFframecount totalFrames = afGetFrameCount(infile, AF_DEFAULT_TRACK);
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AFframecount totalFramesWritten = 0;
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