CVE-2024-47689

5.3 · MEDIUM

Published Oct 21, 2024 linux CWE-362 EPSS 0.62% (47th pctl) CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-47689 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 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to don't set SB_RDONLY in f2fs_handle_critical_error()

syzbot reports a f2fs bug as below:

------------[ cut here ]------------

WARNING: CPU: 1 PID: 58 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177

CPU: 1 UID: 0 PID: 58 Comm: kworker/1:2 Not tainted 6.10.0-syzkaller-12562-g1722389b0d86 #0

Workqueue: events destroy_super_work

RIP: 0010:rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177

Call Trace:

percpu_free_rwsem+0x41/0x80 kernel/locking/percpu-rwsem.c:42

destroy_super_work+0xec/0x130 fs/super.c:282

process_one_work kernel/workqueue.c:3231 [inline]

process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312

worker_thread+0x86d/0xd40 kernel/workqueue.c:3390

kthread+0x2f0/0x390 kernel/kthread.c:389

ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147

ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

As Christian Brauner pointed out [1]: the root cause is f2fs sets

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	>= 6.4.4, < 6.5	Affected

References

Ref git.kernel.org/stable/c/1f63f405c1a1a64b9c310388aad7055fb86b245c Ref git.kernel.org/stable/c/649ec8b30df113042588bd3d3cd4e98bcb1091e0 Ref git.kernel.org/stable/c/930c6ab93492c4b15436524e704950b364b2930c Ref git.kernel.org/stable/c/de43021c72993877a8f86f9fddfa0687609da5a4

Frequently Asked Questions

What is CVE-2024-47689?

CVE-2024-47689 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 5.3 (MEDIUM).

How severe is CVE-2024-47689?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-47689?

How can CyberStrike help with CVE-2024-47689?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-47689 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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