CVE-2024-35976 xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING

In the Linux kernel, the following vulnerability has been resolved: xsk: validate user input for XDPUMEM|COMPLETIONFILLRING syzbot reported an illegal copy in xsksetsockopt 1 Make sure to validate setsockopt @optlen parameter. 1 BUG: KASAN: slab-out-of-bounds in copyfromsockptroffset...

CVE-2024-35976

CVE-2024-35976 affects the Linux kernel’s XDP socket code (xsk) and relates to input validation for XDP_UMEM/COMPLETION_FILL_RING. KASAN reports slab-out-of-bounds read in copy_from_sockptr_offset and copy_from_sockptr during xsk_setsockopt, traced to improper handling of the optlen parameter in ...