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CVE-2026-72242

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: selinux: avoid sk_socket dereference in selinux_sctp_bind_connect() selinux_sctp_bind_connect() dereferences sk->sk_socket to p…

Published Aug 15, 2026EPSS 0.70%

Overview

CVE-2026-72242 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

selinux: avoid sk_socket dereference in selinux_sctp_bind_connect()

selinux_sctp_bind_connect() dereferences sk->sk_socket to pass a

struct socket * to selinux_socket_bind() and

selinux_socket_connect_helper(). However, when the hook is invoked

from the ASCONF softirq path (sctp_process_asconf), there is no file

reference guaranteeing that sk->sk_socket is non-NULL. The setsockopt

callers (bindx, connectx, set_primary, sendmsg connect) hold a file

reference and are not affected.

Both selinux_socket_bind() and selinux_socket_connect_helper()

immediately resolve sock->sk, never using the struct socket * for

anything else. Refactor the inner logic into helpers that take a

struct sock * directly so that selinux_sctp_bind_connect() never needs

to touch sk->sk_socket at all.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2fcaf133a8fd88b69f32ebaecad93fd302da828fRefgit.kernel.org/stable/c/37d642b37ccdc31e1947c2ebc8dc38f03d4a0cebRefgit.kernel.org/stable/c/56acfeb10019e200ab6787d01f8d7cbe0f01526fRefgit.kernel.org/stable/c/5d4d93f9bfbc997ffbb03cd6107e8f6979dbb9b4Refgit.kernel.org/stable/c/a4bc2fb8536488b37680c0b66c59434a4b7f8c2fRefgit.kernel.org/stable/c/cc8bd47b35eca82393cbad08b1cc86f02e034439Refgit.kernel.org/stable/c/d61a80b17254be7230bc5544f8e62ddf21ab38e2Refgit.kernel.org/stable/c/e4f3b8db1b0c5e9f6374b8996d9e1888d1042b55

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72242?

CVE-2026-72242 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-72242?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-72242?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-72242?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72242 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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