CVE-2024-43859

5.5 · MEDIUM

Published Aug 17, 2024 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-2024-43859 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 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:

f2fs: fix to truncate preallocated blocks in f2fs_file_open()

chenyuwen reports a f2fs bug as below:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000011

fscrypt_set_bio_crypt_ctx+0x78/0x1e8

f2fs_grab_read_bio+0x78/0x208

f2fs_submit_page_read+0x44/0x154

f2fs_get_read_data_page+0x288/0x5f4

f2fs_get_lock_data_page+0x60/0x190

truncate_partial_data_page+0x108/0x4fc

f2fs_do_truncate_blocks+0x344/0x5f0

f2fs_truncate_blocks+0x6c/0x134

f2fs_truncate+0xd8/0x200

f2fs_iget+0x20c/0x5ac

do_garbage_collect+0x5d0/0xf6c

f2fs_gc+0x22c/0x6a4

f2fs_disable_checkpoint+0xc8/0x310

f2fs_fill_super+0x14bc/0x1764

mount_bdev+0x1b4/0x21c

f2fs_mount+0x20/0x30

legacy_get_tree+0x50/0xbc

vfs_get_tree+0x5c/0x1b0

do_new_mount+0x298/0x4cc

path_mount+0x33c/0x5fc

__arm64_sys_mount+0xcc/0x15c

invoke_syscall+0x60/0x150

el0_svc_common+0xb8/0xf8

do_el0_svc+0x28/0xa0

el0_svc+0x24/0x84

el0t_64_sync_ha

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	>= 5.17, < 6.6.44	Affected

References

Ref git.kernel.org/stable/c/298b1e4182d657c3e388adcc29477904e9600ed5 Ref git.kernel.org/stable/c/3ba0ae885215b325605ff7ebf6de12ac2adf204d Ref git.kernel.org/stable/c/5f04969136db674f133781626e0b692c5f2bf2f0 Ref git.kernel.org/stable/c/f44a25a8bfe0c15d33244539696cd9119cf44d18 Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-43859?

CVE-2024-43859 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-43859?

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-2024-43859?

How can CyberStrike help with CVE-2024-43859?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-43859 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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