{"id":"UBUNTU-CVE-2015-3027","details":"Clang in LLVM, as used in Apple Xcode before 6.3, performs incorrect register allocation in a way that triggers stack storage for stack cookie pointers, which might allow context-dependent attackers to bypass a stack-guard protection mechanism via crafted input to an affected C program.","modified":"2026-04-22T10:07:08.716619Z","published":"2015-04-10T15:00:00Z","upstream":["CVE-2015-3027"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-3027"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-3027"}],"affected":[{"package":{"name":"llvm-toolchain-3.6","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/llvm-toolchain-3.6@1:3.6-2ubuntu1~trusty2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.6-2ubuntu1~trusty1","1:3.6-2ubuntu1~trusty2"],"ecosystem_specific":{"binaries":[{"binary_name":"clang-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"clang-3.6-examples","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"clang-format-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"clang-modernize-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"cpp11-migrate-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"libclang1-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"liblldb-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"libllvm3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"lldb-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"llvm-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"llvm-3.6-examples","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"llvm-3.6-runtime","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"llvm-3.6-tools","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"python-clang-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"},{"binary_name":"python-lldb-3.6","binary_version":"1:3.6-2ubuntu1~trusty2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-3027.json"}},{"package":{"name":"llvm-toolchain-3.6","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/llvm-toolchain-3.6@1:3.6.2-3ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.6.2-1","1:3.6.2-3","1:3.6.2-3build1","1:3.6.2-3ubuntu1","1:3.6.2-3ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"clang-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"clang-3.6-examples","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"clang-format-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"clang-modernize-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"clang-tidy-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"cpp11-migrate-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"libclang1-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"liblldb-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"libllvm3.6v5","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"lldb-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"llvm-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"llvm-3.6-examples","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"llvm-3.6-runtime","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"llvm-3.6-tools","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"python-clang-3.6","binary_version":"1:3.6.2-3ubuntu2"},{"binary_name":"python-lldb-3.6","binary_version":"1:3.6.2-3ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-3027.json"}},{"package":{"name":"llvm-toolchain-3.5","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/llvm-toolchain-3.5@1:3.5.2-3ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.5.2-2","1:3.5.2-3","1:3.5.2-3build1","1:3.5.2-3build2","1:3.5.2-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"clang-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"clang-3.5-examples","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"clang-format-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"clang-modernize-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"cpp11-migrate-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"libclang1-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"liblldb-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"libllvm3.5v5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"lldb-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"llvm-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"llvm-3.5-examples","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"llvm-3.5-runtime","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"llvm-3.5-tools","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"python-clang-3.5","binary_version":"1:3.5.2-3ubuntu1"},{"binary_name":"python-lldb-3.5","binary_version":"1:3.5.2-3ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-3027.json"}}],"schema_version":"1.7.5","s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