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CVE-2024-47757

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential oob read in nilfs_btree_check_delete() The function nilfs_btree_check_delete(), which checks whether dege…

Published Oct 21, 2024CWE-125EPSS 0.24%

Overview

CVE-2024-47757 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

nilfs2: fix potential oob read in nilfs_btree_check_delete()

The function nilfs_btree_check_delete(), which checks whether degeneration

to direct mapping occurs before deleting a b-tree entry, causes memory

access outside the block buffer when retrieving the maximum key if the

root node has no entries.

This does not usually happen because b-tree mappings with 0 child nodes

are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen

if the b-tree root node read from a device is configured that way, so fix

this potential issue by adding a check for that case.

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/257f9e5185eb6de83377caea686c306e22e871f2Refgit.kernel.org/stable/c/a33e967b681e088a125b979975c93e3453e686cdRefgit.kernel.org/stable/c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0Refgit.kernel.org/stable/c/c4cbcc64bb31e67e02940ce060cc77f7180564cfRefgit.kernel.org/stable/c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27Refgit.kernel.org/stable/c/d20674f31626e0596ae4c1d9401dfb6739b81b58Refgit.kernel.org/stable/c/ed76d381dae125b81d09934e365391a656249da8Refgit.kernel.org/stable/c/f3a9859767c7aea758976f5523903d247e585129Refgit.kernel.org/stable/c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47757?

CVE-2024-47757 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2024-47757?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2024-47757?

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-2024-47757?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47757 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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