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NULL pointer dereference in AP4_Atom::SetType (Ap4Atom.h) #182

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asarubbo opened this issue Sep 8, 2017 · 1 comment
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NULL pointer dereference in AP4_Atom::SetType (Ap4Atom.h) #182

asarubbo opened this issue Sep 8, 2017 · 1 comment
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@asarubbo
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asarubbo commented Sep 8, 2017

On 1.5.0-617:

# mp42aac $FILE out.aac
ASAN:DEADLYSIGNAL
=================================================================
==23307==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc 0x0000005c9865 bp 0x7fffd01b90d0 sp 0x7fffd01b9020 T0)
==23307==The signal is caused by a WRITE memory access.
==23307==Hint: address points to the zero page.
    #0 0x5c9864 in AP4_Atom::SetType(unsigned int) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4Atom.h:247:52
    #1 0x5c9864 in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:499
    #2 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #3 0x60c29f in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #4 0x575855 in AP4_SampleEntry::Read(AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4SampleEntry.cpp:115:9
    #5 0x57d624 in AP4_VisualSampleEntry::AP4_VisualSampleEntry(unsigned int, unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4SampleEntry.cpp:742:5
    #6 0x57d624 in AP4_AvcSampleEntry::AP4_AvcSampleEntry(unsigned int, unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4SampleEntry.cpp:994
    #7 0x5cbf58 in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:305:24
    #8 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #9 0x586a2c in AP4_StsdAtom::AP4_StsdAtom(unsigned int, unsigned char, unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4StsdAtom.cpp:100:13
    #10 0x58566f in AP4_StsdAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4StsdAtom.cpp:56:16
    #11 0x5ca71c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:422:20
    #12 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #13 0x60c29f in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #14 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:138:5
    #15 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:87
    #16 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:751:20
    #17 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #18 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #19 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:138:5
    #20 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:87
    #21 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:751:20
    #22 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #23 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #24 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:138:5
    #25 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:87
    #26 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:751:20
    #27 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #28 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #29 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:138:5
    #30 0x58e6ed in AP4_TrakAtom::AP4_TrakAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4TrakAtom.cpp:165:5
    #31 0x5c8e3b in AP4_TrakAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4TrakAtom.h:58:20
    #32 0x5c8e3b in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:377
    #33 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #34 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:193:12
    #35 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4ContainerAtom.cpp:138:5
    #36 0x5521b0 in AP4_MoovAtom::AP4_MoovAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4MoovAtom.cpp:79:5
    #37 0x5cad1d in AP4_MoovAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4MoovAtom.h:56:20
    #38 0x5cad1d in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:357
    #39 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:220:14
    #40 0x5c75c0 in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, AP4_Atom*&) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4AtomFactory.cpp:150:12
    #41 0x54ea2c in AP4_File::ParseStream(AP4_ByteStream&, AP4_AtomFactory&, bool) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4File.cpp:104:12
    #42 0x54f0fa in AP4_File::AP4_File(AP4_ByteStream&, bool) /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4File.cpp:78:5
    #43 0x542552 in main /tmp/Bento4-1.5.0-617/Source/C++/Apps/Mp42Aac/Mp42Aac.cpp:242:32
    #44 0x7f048a8bf680 in __libc_start_main /var/tmp/portage/sys-libs/glibc-2.23-r4/work/glibc-2.23/csu/../csu/libc-start.c:289
    #45 0x44f3f8 in _start (/usr/bin/mp42aac+0x44f3f8)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /tmp/Bento4-1.5.0-617/Source/C++/Core/Ap4Atom.h:247:52 in AP4_Atom::SetType(unsigned int)
==23307==ABORTING

Testcase:
https://github.com/asarubbo/poc/blob/master/00336-bento4-NULLptr-AP4_Atom_SetType
barbibulle added a commit that referenced this issue Sep 9, 2017
@barbibulle
fix for #182
be7185f
@barbibulle barbibulle self-assigned this Sep 9, 2017
@barbibulle barbibulle added the bug label Sep 9, 2017
@barbibulle
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Fixed in master branch.

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