CVE-2021-4135 : LINUX KERNEL EBPF BPF.C NSIM_BPF_MAP_ALLOC INFORMATION DISCLOSURE

Description

A memory leak vulnerability was found in the Linux kernel’s eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called. A local user could use this flaw to get unauthorized access to some data.

References

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=481221775d53

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