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CVE-2024-53221

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null-ptr-deref in f2fs_submit_page_bio() There's issue as follows when concurrently installing the f2fs.ko module and…

Published Dec 27, 2024CWE-476EPSS 0.22%

Overview

CVE-2024-53221 is a medium-severity vulnerability. It was published on December 27, 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 null-ptr-deref in f2fs_submit_page_bio()

There's issue as follows when concurrently installing the f2fs.ko

module and mounting the f2fs file system:

KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]

RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs]

Call Trace:

<TASK>

f2fs_submit_page_bio+0x126/0x8b0 [f2fs]

__get_meta_page+0x1d4/0x920 [f2fs]

get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs]

validate_checkpoint+0xac/0x290 [f2fs]

f2fs_get_valid_checkpoint+0x207/0x950 [f2fs]

f2fs_fill_super+0x1007/0x39b0 [f2fs]

mount_bdev+0x183/0x250

legacy_get_tree+0xf4/0x1e0

vfs_get_tree+0x88/0x340

do_new_mount+0x283/0x5e0

path_mount+0x2b2/0x15b0

__x64_sys_mount+0x1fe/0x270

do_syscall_64+0x5f/0x170

entry_SYSCALL_64_after_hwframe+0x76/0x7e

Above issue happens as the biset of the f2fs file system is not

initialized before register "f2fs_fs_type".

To address above issue just register "f2fs_fs_type"

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/32f5e291b7677495f98246eec573767430321c08Refgit.kernel.org/stable/c/4289be8465924748daa9bf14866eb7f0987d4e39Refgit.kernel.org/stable/c/8dddc12d03248755d9f709bc1eb9e3ea2bf1b322Refgit.kernel.org/stable/c/9e11b1d5fda972f6be60ab732976a7c8e064cd56Refgit.kernel.org/stable/c/b7d0a97b28083084ebdd8e5c6bccd12e6ec18faaRefgit.kernel.org/stable/c/bd9197b72d772be7bccc3b66c83a3157cfe2f96f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-53221?

CVE-2024-53221 is a medium-severity vulnerability. It was published on December 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-53221?

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-2024-53221?

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-2024-53221?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-53221 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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