CVE-2024-46774

In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: Prevent Spectre v1 gadget construction in sysrtas Smatch warns: arch/powerpc/kernel/rtas.c:1932 dosysrtas warn: potential spectre issue 'args.args' r local cap The 'nargs' and 'nret' locals come directly from a...

CVE-2024-46774

CVE-2024-46774 affects the Linux kernel PowerPC RTAS path (sys_rtas). The issue arises in powerpc/rtas.c where nargs/nret come from a user buffer and are used as indices into a small stack array and as inputs to copy_to_user after bounds checks, allowing speculative execution (Spectre v1) gadget ...