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CVE-2024-26955

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent kernel bug at submit_bh_wbc() Fix a bug where nilfs_get_block() returns a successful status when searching and…

Published May 1, 2024EPSS 0.26%

Overview

CVE-2024-26955 is a high-severity vulnerability. It was published on May 1, 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:

nilfs2: prevent kernel bug at submit_bh_wbc()

Fix a bug where nilfs_get_block() returns a successful status when

searching and inserting the specified block both fail inconsistently. If

this inconsistent behavior is not due to a previously fixed bug, then an

unexpected race is occurring, so return a temporary error -EAGAIN instead.

This prevents callers such as __block_write_begin_int() from requesting a

read into a buffer that is not mapped, which would cause the BUG_ON check

for the BH_Mapped flag in submit_bh_wbc() to fail.

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/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44cRefgit.kernel.org/stable/c/192e9f9078c96be30b31c4b44d6294b24520fce5Refgit.kernel.org/stable/c/269cdf353b5bdd15f1a079671b0f889113865f20Refgit.kernel.org/stable/c/32eaee72e96590a75445c8a6c7c1057673b47e07Refgit.kernel.org/stable/c/48d443d200237782dc82e6b60663ec414ef02e39Refgit.kernel.org/stable/c/76ffbe911e2798c7296968f5fd72f7bf67207a8dRefgit.kernel.org/stable/c/91e4c4595fae5e87069e44687ae879091783c183Refgit.kernel.org/stable/c/ca581d237f3b8539c044205bb003de71d75d227cRefgit.kernel.org/stable/c/f0fe7ad5aff4f0fcf988913313c497de85f1e186Refgit.kernel.org/stable/c/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26955?

CVE-2024-26955 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26955?

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-2024-26955?

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-2024-26955?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26955 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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