CVE-2024-56372

5.5 · MEDIUM

Published Jan 11, 2025 linux CWE-476 EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-56372 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 11, 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:

net: tun: fix tun_napi_alloc_frags()

syzbot reported the following crash [1]

Issue came with the blamed commit. Instead of going through

all the iov components, we keep using the first one

and end up with a malformed skb.

[1]

kernel BUG at net/core/skbuff.c:2849 !

Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI

CPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024

RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848

Code: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90

RSP: 0018:ffffc90004cbef30 EFLAGS: 00010293

RAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00

RDX: 0000000000000000 RSI: 00000000ffffff

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	>= 6.4, < 6.6.68	Affected

References

Ref git.kernel.org/stable/c/429fde2d81bcef0ebab002215358955704586457 Ref git.kernel.org/stable/c/4f393ea1e2f9c3b646d00572dd92c48b1869c65f Ref git.kernel.org/stable/c/efe74dd58a72bd987b158142c904b7ef2ad132e2

Frequently Asked Questions

What is CVE-2024-56372?

CVE-2024-56372 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 11, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56372?

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-2024-56372?

How can CyberStrike help with CVE-2024-56372?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56372 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.

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