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CVE-2024-26980

8.2 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf If ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size validatio…

Published May 1, 2024CWE-125EPSS 0.62%

Overview

CVE-2024-26980 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf

If ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size

validation could be skipped. if request size is smaller than

sizeof(struct smb2_query_info_req), slab-out-of-bounds read can happen in

smb2_allocate_rsp_buf(). This patch allocate response buffer after

decrypting transform request. smb3_decrypt_req() will validate transform

request size and avoid slab-out-of-bound in smb2_allocate_rsp_buf().

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/0977f89722eceba165700ea384f075143f012085Refgit.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1Refgit.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248Refgit.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20Refgit.kernel.org/stable/c/da21401372607c49972ea87a6edaafb36a17c325Refgit.kernel.org/stable/c/0977f89722eceba165700ea384f075143f012085Refgit.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1Refgit.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248Refgit.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20Refgit.kernel.org/stable/c/da21401372607c49972ea87a6edaafb36a17c325

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26980?

CVE-2024-26980 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2024-26980?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-26980?

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-2024-26980?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26980 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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