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CVE-2024-49944

5.5 · MEDIUM
Published Oct 21, 2024 linux EPSS 0.28% (20th pctl)

Overview

CVE-2024-49944 is a medium-severity vulnerability affecting linux linux_kernel. 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 and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 2.6.30, < 5.10.227 Affected

References

Ref git.kernel.org/stable/c/0e4e2e60556c6ed00e8450b720f106a268d23062 Ref git.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7 Ref git.kernel.org/stable/c/89bbead9d897c77d0b566349c8643030ff2abeba Ref git.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160 Ref git.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455 Ref git.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860fa Ref git.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcce Ref git.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5 Ref git.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80d Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-49944?

CVE-2024-49944 is a medium-severity vulnerability affecting linux linux_kernel. 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 and patches from linux. Update linux_kernel to the latest patched version. 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's AI-powered security agents can automatically detect CVE-2024-49944 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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