CVE-2024-56662

In the Linux kernel, the following vulnerability has been resolved: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl Fix an issue detected by syzbot with KASAN: BUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/ core.c:416 [inline] BUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0 drivers/acpi/nfit/core.c:459 The issue occurs in cmd_to_func when the call_pkg->nd_reserved2 array is accessed without verifying that call_pkg points to a buffer that is appropriately sized as a struct nd_cmd_pkg. This can lead to out-of-bounds access and undefined behavior if the buffer does not have sufficient space. To address this, a check was added in acpi_nfit_ctl() to ensure that buf is not NULL and that buf_len is less than sizeof(*call_pkg) before accessing it. This ensures safe access to the members of call_pkg, including the nd_reserved2 array.

• linux linux kernel (>= 4.14.176 < 4.15) • linux linux kernel (>= 4.19.31 < 4.20) • linux linux kernel (>= 5.0.4 < 5.10.232) • linux linux kernel (>= 5.11 < 5.15.175) • linux linux kernel (>= 5.16 < 6.1.121) • linux linux kernel (>= 6.2 < 6.6.67) • linux linux kernel (>= 6.7 < 6.12.6) • linux linux kernel 6.13