From 7f5aab82708813d86aab04029095988f40a8462e Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Sat, 5 May 2012 02:06:49 +0200 Subject: check if we work on a valid description in IsDuplicateDescription as we end up working on dangling pointers otherwise which segfaults on s390x and ppc64 (Closes: #669427) --- apt-pkg/pkgcachegen.cc | 4 ++-- debian/changelog | 5 ++++- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index 5e0726f3b..d455e4070 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -286,7 +286,7 @@ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator pkgCache::DescIterator Desc = Ver.DescriptionList(); // a version can only have one md5 describing it - if (MD5SumValue(Desc.md5()) != CurMd5) + if (Desc.end() == true || MD5SumValue(Desc.md5()) != CurMd5) continue; // don't add a new description if we have one for the given @@ -1459,7 +1459,7 @@ bool IsDuplicateDescription(pkgCache::DescIterator Desc, MD5SumValue const &CurMd5, std::string const &CurLang) { // Descriptions in the same link-list have all the same md5 - if (MD5SumValue(Desc.md5()) != CurMd5) + if (Desc.end() == true || MD5SumValue(Desc.md5()) != CurMd5) return false; for (; Desc.end() == false; ++Desc) if (Desc.LanguageCode() == CurLang) diff --git a/debian/changelog b/debian/changelog index 72830ad91..2c4bde370 100644 --- a/debian/changelog +++ b/debian/changelog @@ -28,10 +28,13 @@ apt (0.9.3) unstable; urgency=low - use the correct library name the symbols header * apt-pkg/pkgcachegen.cc: - check if NewDescription allocation has failed and error out accordingly + - check if we work on a valid description in IsDuplicateDescription as + we end up working on dangling pointers otherwise which segfaults on + s390x and ppc64 (Closes: #669427) * apt-pkg/deb/deblistparser.cc: - check length and containing chars for a given description md5sum - -- David Kalnischkies Wed, 02 May 2012 22:28:32 +0200 + -- David Kalnischkies Sat, 05 May 2012 02:02:41 +0200 apt (0.9.2) unstable; urgency=low -- cgit v1.2.3