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CVE-2024-36889

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure snd_nxt is properly initialized on connect Christoph reported a splat hinting at a corrupted snd_una: WARNING:…

Published May 30, 2024EPSS 0.27%

Overview

CVE-2024-36889 is a medium-severity vulnerability. It was published on May 30, 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: ensure snd_nxt is properly initialized on connect

Christoph reported a splat hinting at a corrupted snd_una:

WARNING: CPU: 1 PID: 38 at net/mptcp/protocol.c:1005 __mptcp_clean_una+0x4b3/0x620 net/mptcp/protocol.c:1005

Modules linked in:

CPU: 1 PID: 38 Comm: kworker/1:1 Not tainted 6.9.0-rc1-gbbeac67456c9 #59

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014

Workqueue: events mptcp_worker

RIP: 0010:__mptcp_clean_una+0x4b3/0x620 net/mptcp/protocol.c:1005

Code: be 06 01 00 00 bf 06 01 00 00 e8 a8 12 e7 fe e9 00 fe ff ff e8

8e 1a e7 fe 0f b7 ab 3e 02 00 00 e9 d3 fd ff ff e8 7d 1a e7 fe

<0f> 0b 4c 8b bb e0 05 00 00 e9 74 fc ff ff e8 6a 1a e7 fe 0f 0b e9

RSP: 0018:ffffc9000013fd48 EFLAGS: 00010293

RAX: 0000000000000000 RBX: ffff8881029bd280 RCX: ffffffff82382fe4

RDX: ffff8881003cbd00 RSI: ffffffff823833c3 RDI: 0000000000000001

RBP: 0000000000000000 R08:

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/39ca83ed73db9edcc6d70c0dc7a73085a4725012Refgit.kernel.org/stable/c/592f69b41766d366dbb8ff4ef5a67c4396527bbeRefgit.kernel.org/stable/c/99951b62bf20cec9247f633a3bea898338b9e5b4Refgit.kernel.org/stable/c/aa0c07c1f20e05b30019bff083ec43665536f06fRefgit.kernel.org/stable/c/dc941fec0719d0471a5902424d6b2a17df233193Refgit.kernel.org/stable/c/fb7a0d334894206ae35f023a82cad5a290fd7386Refgit.kernel.org/stable/c/39ca83ed73db9edcc6d70c0dc7a73085a4725012Refgit.kernel.org/stable/c/592f69b41766d366dbb8ff4ef5a67c4396527bbeRefgit.kernel.org/stable/c/99951b62bf20cec9247f633a3bea898338b9e5b4Refgit.kernel.org/stable/c/aa0c07c1f20e05b30019bff083ec43665536f06f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-36889?

CVE-2024-36889 is a medium-severity vulnerability. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36889?

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-2024-36889?

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-2024-36889?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-36889 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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