CVE-2023-52735

In the Linux kernel, the following vulnerability has been resolved:

bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself

sock_map proto callbacks should never call themselves by design. Protect against bugs like [1] and break out of the recursive loop to avoid a stack overflow in favor of a resource leak.

[1] https://lore.kernel.org/all/[email protected]/

Redhat has rated this vulnerability as Low severity as by default in RHEL system the BPF sockmap feature is disabled by default which is needed for this vulnerability to be exploitable, on top of that local access and higher privileges are required to exploit this vulnerability and a successful exploitation will only result in a denial of service vulnerability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.