In the Linux kernel, the following vulnerability has been resolved: openrisc: traps: Don't send signals to kernel mode threads OpenRISC exception handling sends signals to user processes on floating point exceptions and trap instructions (for debugging) among others. There is a bug where the trap handling logic may send signals to kernel threads, we should not send these signals to kernel threads, if that happens we treat it as an error. This patch adds conditions to die if the kernel receives these exceptions in kernel mode code.
https://git.kernel.org/stable/c/cea9d0015c140af39477dd5eeb9b20233a45daa9
https://git.kernel.org/stable/c/c88cfb5cea5f8f9868ef02cc9ce9183a26dcf20f
https://git.kernel.org/stable/c/c0ed9a711e3392d73e857faa031d8d349c0d70db
https://git.kernel.org/stable/c/075c0405b0d7d9fc490609e988a3af0069596538