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CVE-2024-53123

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mptcp: error out earlier on disconnect Eric reported a division by zero splat in the MPTCP protocol: Oops: divide error: 0000…

Published Dec 2, 2024CWE-362EPSS 0.18%

Overview

CVE-2024-53123 is a medium-severity vulnerability. It was published on December 2, 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:

mptcp: error out earlier on disconnect

Eric reported a division by zero splat in the MPTCP protocol:

Oops: divide error: 0000 [#1] PREEMPT SMP KASAN PTI

CPU: 1 UID: 0 PID: 6094 Comm: syz-executor317 Not tainted

6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0

Hardware name: Google Google Compute Engine/Google Compute Engine,

BIOS Google 09/13/2024

RIP: 0010:__tcp_select_window+0x5b4/0x1310 net/ipv4/tcp_output.c:3163

Code: f6 44 01 e3 89 df e8 9b 75 09 f8 44 39 f3 0f 8d 11 ff ff ff e8

0d 74 09 f8 45 89 f4 e9 04 ff ff ff e8 00 74 09 f8 44 89 f0 99 <f7> 7c

24 14 41 29 d6 45 89 f4 e9 ec fe ff ff e8 e8 73 09 f8 48 89

RSP: 0018:ffffc900041f7930 EFLAGS: 00010293

RAX: 0000000000017e67 RBX: 0000000000017e67 RCX: ffffffff8983314b

RDX: 0000000000000000 RSI: ffffffff898331b0 RDI: 0000000000000004

RBP: 00000000005d6000 R08: 0000000000000004 R09: 0000000000017e67

R10: 0000000000003e80 R11: 0000000000000000 R12: 0000000000003e80

R13: f

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/581302298524e9d77c4c44ff5156a6cd112227aeRefgit.kernel.org/stable/c/955388e1d5d222c4101c596b536d41b91a8b212eRefgit.kernel.org/stable/c/a66805c9b22caf4e42af7a616f6c6b83c90d1010Refgit.kernel.org/stable/c/a749b23059b43a9b1787eb36c5d9d44150a34238Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-53123?

CVE-2024-53123 is a medium-severity vulnerability. It was published on December 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-53123?

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-2024-53123?

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-2024-53123?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-53123 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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