Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: iouring: fixed the error in pbuf checking. Syz reports a problem, which boils down to inconsistent error handling of NULL vs ISERR in ioallocpbufring. KASAN: nullptrderef in range 0x0000000000000000-0x0000000000000007. RIP:...

The vulnerability of the io_alloc_pbuf_ring() function in the io_uring subsystem of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the ioallocpbufring function in the iouring/kbuf.c module of the iouring subsystem in the Linux operating system is related to the assignment of a null pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...