This does not seem security relevant, so making this public. It's a bit
weird, though. The code called is
if (Map.Size() > sizeof(header)) {
adler = adler32(adler,
static_cast<const unsigned char *>(GetMap().Data()) +
sizeof(header),
GetMap().Size() - sizeof(header));
}
so, the map should be readable there and for that size. Something is off
with the size, though, it's about 140 TB. And the address is off, so
the mmap data structure must have gone completely nuts.
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https://bugs.launchpad.net/bugs/1726789
Title:
apt-get crashed with signal 7 in adler32_z()
Status in apt package in Ubuntu:
New
Bug description:
This error came up due to multiple reporting errors in my Ubuntu MATE
installation.
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: apt 1.5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CrashCounter: 1
Date: Tue Oct 24 10:25:56 2017
ExecutablePath: /usr/bin/apt-get
InstallationDate: Installed on 2017-10-23 (0 days ago)
InstallationMedia: Ubuntu-MATE 17.10 "Artful Aardvark" - Release amd64
(20171018)
ProcCmdline: apt-get check -qq
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
LANG=en_GB.UTF-8
Signal: 7
SourcePackage: apt
StacktraceTop:
adler32_z () from /lib/x86_64-linux-gnu/libz.so.1
?? () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
pkgCache::ReMap(bool const&) () from
/usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
pkgCache::pkgCache(MMap*, bool) () from
/usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
?? () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
Title: apt-get crashed with signal 7 in adler32_z()
UpgradeStatus: No upgrade log present (probably fresh install)
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