A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.
{ "binaries": [ { "binary_name": "p7zip", "binary_version": "16.02+dfsg-6" }, { "binary_name": "p7zip-dbgsym", "binary_version": "16.02+dfsg-6" }, { "binary_name": "p7zip-full", "binary_version": "16.02+dfsg-6" }, { "binary_name": "p7zip-full-dbgsym", "binary_version": "16.02+dfsg-6" } ], "ubuntu_priority": "low", "availability": "No subscription required" }