Daniel Borkmann

The issue allows local users to cause a denial of service, resulting in a system crash. This is achieved by creating a packet filter and loading crafted BPF instructions that trigger late convergence by the JIT compiler. The `bpf int jit compile` function in `arch/x86/net/bpf jit comp.c` is the vulnerable component.

The issue is related to multiple vulnerabilities in the Linux kernel, specifically in the SCTP implementation, which can be exploited remotely to cause a denial of service (NULL pointer dereference and system crash) via a malformed INIT chunk. The `sctp process param` function in `net/sctp/sm make chunk.c` is vulnerable when ASCONF is used. These vulnerabilities can lead to a disruption of confidentiality, integrity, and availability of protected information.

The issue allows remote attackers to obtain sensitive information from kernel memory. This is achieved by establishing an IRC DCC session where incorrect packet data is transmitted during the use of the NAT mangle feature.

The issue allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging improper access to a certain error field in the ext4 journal stop function.