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CVE-2022-49732

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: sock: redo the psock vs ULP protection check Commit 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()") has mo…

Published Feb 26, 2025EPSS 0.20%

Overview

CVE-2022-49732 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

sock: redo the psock vs ULP protection check

Commit 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()")

has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to

the new tcp_bpf_update_proto() function. I'm guessing that this

was done to allow creating psocks for non-inet sockets.

Unfortunately the destruction path for psock includes the ULP

unwind, so we need to fail the sk_psock_init() itself.

Otherwise if ULP is already present we'll notice that later,

and call tcp_update_ulp() with the sk_proto of the ULP

itself, which will most likely result in the ULP looping

its callbacks.

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/72fa0f65b56605b8a9ae9fba2082f2123f7fe017Refgit.kernel.org/stable/c/922309e50befb0cfa5cb65e4989b7706d6578846Refgit.kernel.org/stable/c/e34a07c0ae3906f97eb18df50902e2a01c1015b6

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49732?

CVE-2022-49732 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49732?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49732?

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-2022-49732?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49732 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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