Description

The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.

References

https://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cb

https://security.netapp.com/advisory/ntap-20211229-0005/

http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html

Details

Risk Information

CVSS v2

CVSS v3