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CVE-2024-49958

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reserve space for inline xattr before attaching reflink tree One of our customers reported a crash and a corrupted ocfs2…

Published Oct 21, 2024EPSS 0.27%

Overview

CVE-2024-49958 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

ocfs2: reserve space for inline xattr before attaching reflink tree

One of our customers reported a crash and a corrupted ocfs2 filesystem.

The crash was due to the detection of corruption. Upon troubleshooting,

the fsck -fn output showed the below corruption

[EXTENT_LIST_FREE] Extent list in owner 33080590 claims 230 as the next free chain record,

but fsck believes the largest valid value is 227. Clamp the next record value? n

The stat output from the debugfs.ocfs2 showed the following corruption

where the "Next Free Rec:" had overshot the "Count:" in the root metadata

block.

Inode: 33080590 Mode: 0640 Generation: 2619713622 (0x9c25a856)

FS Generation: 904309833 (0x35e6ac49)

CRC32: 00000000 ECC: 0000

Type: Regular Attr: 0x0 Flags: Valid

Dynamic Features: (0x16) HasXattr InlineXattr Refcounted

Extended Attributes Block: 0 Extended Attributes Inline Size

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/020f5c53c17f66c0a8f2d37dad27ace301b8d8a1Refgit.kernel.org/stable/c/5c2072f02c0d75802ec28ec703b7d43a0dd008b5Refgit.kernel.org/stable/c/5c9807c523b4fca81d3e8e864dabc8c806402121Refgit.kernel.org/stable/c/5ca60b86f57a4d9648f68418a725b3a7de2816b0Refgit.kernel.org/stable/c/637c00e06564a945e9d0edb3d78d362d64935f9fRefgit.kernel.org/stable/c/74364cb578dcc0b6c9109519d19cbe5a56afac9aRefgit.kernel.org/stable/c/96ce4c3537114d1698be635f5e36c62dc49df7a4Refgit.kernel.org/stable/c/9f9a8f3ac65b4147f1a7b6c05fad5192c0e3c3d9Refgit.kernel.org/stable/c/aac31d654a0a31cb0d2fa36ae694f4e164a52707Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49958?

CVE-2024-49958 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-49958?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-49958?

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-2024-49958?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49958 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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