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CVE-2022-49318

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: f2fs: remove WARN_ON in f2fs_is_valid_blkaddr Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and __is_bitmap_valid.

Published Feb 26, 2025EPSS 0.26%

Overview

CVE-2022-49318 is a medium-severity vulnerability. It was published on February 26, 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:

f2fs: remove WARN_ON in f2fs_is_valid_blkaddr

Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and

__is_bitmap_valid. For example, in f2fs_is_valid_blkaddr,

if type is DATA_GENERIC_ENHANCE or DATA_GENERIC_ENHANCE_READ,

it invokes WARN_ON if blkaddr is not in the right range.

The call trace is as follows:

f2fs_get_node_info+0x45f/0x1070

read_node_page+0x577/0x1190

__get_node_page.part.0+0x9e/0x10e0

__get_node_page

f2fs_get_node_page+0x109/0x180

do_read_inode

f2fs_iget+0x2a5/0x58b0

f2fs_fill_super+0x3b39/0x7ca0

Fix these two WARNs by replacing WARN_ON with dump_stack.

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/0a7a1fc7e71eecf2e5053a6c312c9f0dcbb9b8fdRefgit.kernel.org/stable/c/32bea51fe4c6e92c00403739f7547c89219bea88Refgit.kernel.org/stable/c/8c62c5e26345c34d199b4b8c8e69255ba3d0e751Refgit.kernel.org/stable/c/99c09b298e47ebbe345a6da9f268b32a6b0f4582Refgit.kernel.org/stable/c/cd6374af36cc548464d8c47a93fdba7303bb82a4Refgit.kernel.org/stable/c/dc2f78e2d4cc844a1458653d57ce1b54d4a29f21

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49318?

CVE-2022-49318 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49318?

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-2022-49318?

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-2022-49318?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49318 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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