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CVE-2024-49944

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start In sctp_listen_start() invoked by sctp_inet_listen(),…

Published Oct 21, 2024EPSS 0.28%

Overview

CVE-2024-49944 is a medium-severity vulnerability. It was published on October 21, 2024 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:

sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start

In sctp_listen_start() invoked by sctp_inet_listen(), it should set the

sk_state back to CLOSED if sctp_autobind() fails due to whatever reason.

Otherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)->reuse

is already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)->bind_hash will

be dereferenced as sk_state is LISTENING, which causes a crash as bind_hash

is NULL.

KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]

RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617

Call Trace:

<TASK>

__sys_listen_socket net/socket.c:1883 [inline]

__sys_listen+0x1b7/0x230 net/socket.c:1894

__do_sys_listen net/socket.c:1902 [inline]

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/0e4e2e60556c6ed00e8450b720f106a268d23062Refgit.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7Refgit.kernel.org/stable/c/89bbead9d897c77d0b566349c8643030ff2abebaRefgit.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160Refgit.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455Refgit.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860faRefgit.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcceRefgit.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5Refgit.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80dReflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49944?

CVE-2024-49944 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-49944?

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-2024-49944?

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-2024-49944?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49944 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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