Red Hat: CVE-2019-15847: CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output (Multiple Advisories)
5
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
09/02/2019
05/01/2020
04/29/2020
12/15/2023
Description
The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.
Solution(s)
- redhat-upgrade-cpp
- redhat-upgrade-cpp-debuginfo
- redhat-upgrade-gcc
- redhat-upgrade-gcc-c
- redhat-upgrade-gcc-c-debuginfo
- redhat-upgrade-gcc-debuginfo
- redhat-upgrade-gcc-debugsource
- redhat-upgrade-gcc-gdb-plugin
- redhat-upgrade-gcc-gdb-plugin-debuginfo
- redhat-upgrade-gcc-gfortran
- redhat-upgrade-gcc-gfortran-debuginfo
- redhat-upgrade-gcc-offload-nvptx
- redhat-upgrade-gcc-offload-nvptx-debuginfo
- redhat-upgrade-gcc-plugin-devel
- redhat-upgrade-gcc-plugin-devel-debuginfo
- redhat-upgrade-libasan
- redhat-upgrade-libasan-debuginfo
- redhat-upgrade-libatomic
- redhat-upgrade-libatomic-debuginfo
- redhat-upgrade-libatomic-static
- redhat-upgrade-libgcc
- redhat-upgrade-libgcc-debuginfo
- redhat-upgrade-libgfortran
- redhat-upgrade-libgfortran-debuginfo
- redhat-upgrade-libgomp
- redhat-upgrade-libgomp-debuginfo
- redhat-upgrade-libgomp-offload-nvptx
- redhat-upgrade-libgomp-offload-nvptx-debuginfo
- redhat-upgrade-libitm
- redhat-upgrade-libitm-debuginfo
- redhat-upgrade-libitm-devel
- redhat-upgrade-liblsan
- redhat-upgrade-liblsan-debuginfo
- redhat-upgrade-libquadmath
- redhat-upgrade-libquadmath-debuginfo
- redhat-upgrade-libquadmath-devel
- redhat-upgrade-libstdc
- redhat-upgrade-libstdc-debuginfo
- redhat-upgrade-libstdc-devel
- redhat-upgrade-libstdc-docs
- redhat-upgrade-libstdc-static
- redhat-upgrade-libtsan
- redhat-upgrade-libtsan-debuginfo
- redhat-upgrade-libubsan
- redhat-upgrade-libubsan-debuginfo
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