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CVE-2024-49887

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to don't panic system for no free segment fault injection f2fs: fix to don't panic system for no free segment fault i…

Published Oct 21, 2024EPSS 0.26%

Overview

CVE-2024-49887 is a medium-severity vulnerability. It was published on October 21, 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 don't panic system for no free segment fault injection

f2fs: fix to don't panic system for no free segment fault injection

syzbot reports a f2fs bug as below:

F2FS-fs (loop0): inject no free segment in get_new_segment of __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167

F2FS-fs (loop0): Stopped filesystem due to reason: 7

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

kernel BUG at fs/f2fs/segment.c:2748!

CPU: 0 UID: 0 PID: 5109 Comm: syz-executor304 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0

RIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline]

RIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836

Call Trace:

__allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167

f2fs_allocate_new_section fs/f2fs/segment.c:3181 [inline]

f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3195

f2fs_expand_inode_data+0x5d6/0xbb0 fs/f2fs/file.c:1799

f2fs_fallocate+0x448/0x960 fs/f2fs/fil

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/645ec43760e86d3079fee2e8b51fde7060a540d0Refgit.kernel.org/stable/c/65a6ce4726c27b45600303f06496fef46d00b57fRefgit.kernel.org/stable/c/9f6e7a0512a57387d36f5e9e9635d6668cac13dd

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49887?

CVE-2024-49887 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-49887?

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-2024-49887?

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-2024-49887?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49887 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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