CVE-2022-49030

In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.

• linux linux kernel (>= 5.8 < 5.10.158) • linux linux kernel (>= 5.11 < 5.15.82) • linux linux kernel (>= 5.16 < 6.0.12) • linux linux kernel 6.1