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CVE-2024-26754

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp() The gtp_net_ops pernet operations structure for the subsystem…

Published Apr 3, 2024CWE-416EPSS 0.25%

Overview

CVE-2024-26754 is a high-severity vulnerability. It was published on April 3, 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:

gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp()

The gtp_net_ops pernet operations structure for the subsystem must be

registered before registering the generic netlink family.

Syzkaller hit 'general protection fault in gtp_genl_dump_pdp' bug:

general protection fault, probably for non-canonical address

0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN NOPTI

KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]

CPU: 1 PID: 5826 Comm: gtp Not tainted 6.8.0-rc3-std-def-alt1 #1

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014

RIP: 0010:gtp_genl_dump_pdp+0x1be/0x800 [gtp]

Code: c6 89 c6 e8 64 e9 86 df 58 45 85 f6 0f 85 4e 04 00 00 e8 c5 ee 86

df 48 8b 54 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80>

3c 02 00 0f 85 de 05 00 00 48 8b 44 24 18 4c 8b 30 4c 39 f0 74

RSP: 0018:ffff888014107220 EFLAGS: 00010202

RAX: dffffc0000000000 RBX: 0000000

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/136cfaca22567a03bbb3bf53a43d8cb5748b80ecRefgit.kernel.org/stable/c/2e534fd15e5c2ca15821c897352cf0e8a3e30dcaRefgit.kernel.org/stable/c/3963f16cc7643b461271989b712329520374ad2aRefgit.kernel.org/stable/c/5013bd54d283eda5262c9ae3bcc966d01daf8576Refgit.kernel.org/stable/c/a576308800be28f2eaa099e7caad093b97d66e77Refgit.kernel.org/stable/c/ba6b8b02a3314e62571a540efa96560888c5f03eRefgit.kernel.org/stable/c/f0ecdfa679189d26aedfe24212d4e69e42c2c861Refgit.kernel.org/stable/c/f8cbd1791900b5d96466eede8e9439a5b9ca4de7Refgit.kernel.org/stable/c/136cfaca22567a03bbb3bf53a43d8cb5748b80ecRefgit.kernel.org/stable/c/2e534fd15e5c2ca15821c897352cf0e8a3e30dca

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26754?

CVE-2024-26754 is a high-severity vulnerability. It was published on April 3, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26754?

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-2024-26754?

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-2024-26754?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26754 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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