Name of the Vulnerable Software and Affected Versions GCC Toolset (affected versions not specified)

Description The issue concerns certain Intel CPUs affected by the Jump Conditional Code (JCC) bug, causing machine instructions to be executed incorrectly. This can lead to improper program execution on affected CPUs. A workaround is available in the assembler to mitigate performance loss, but it is not enabled by default. The full fix requires updating the microcode of vulnerable CPUs, which can cause performance degradation.

Recommendations To apply the workaround, recompile a program using GCC with the "-Wa,-mbranches-within-32B-boundaries" command-line option. Note that applying the workaround will increase the size of the program and there can still be a slight performance decrease, although it should be less than it would have been without the recompilation.