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CVE-2024-26793

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: gtp: fix use-after-free and null-ptr-deref in gtp_newlink() The gtp_link_ops operations structure for the subsystem must be reg…

Published Apr 4, 2024CWE-416EPSS 0.29%

Overview

CVE-2024-26793 is a high-severity vulnerability. It was published on April 4, 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_newlink()

The gtp_link_ops operations structure for the subsystem must be

registered after registering the gtp_net_ops pernet operations structure.

Syzkaller hit 'general protection fault in gtp_genl_dump_pdp' bug:

[ 1010.702740] gtp: GTP module unloaded

[ 1010.715877] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI

[ 1010.715888] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]

[ 1010.715895] CPU: 1 PID: 128616 Comm: a.out Not tainted 6.8.0-rc6-std-def-alt1 #1

[ 1010.715899] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014

[ 1010.715908] RIP: 0010:gtp_newlink+0x4d7/0x9c0 [gtp]

[ 1010.715915] Code: 80 3c 02 00 0f 85 41 04 00 00 48 8b bb d8 05 00 00 e8 ed f6 ff ff 48 89 c2 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 4f 04 00 00 4c

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/01129059d5141d62fae692f7a336ae3bc712d3ebRefgit.kernel.org/stable/c/5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8Refgit.kernel.org/stable/c/616d82c3cfa2a2146dd7e3ae47bda7e877ee549eRefgit.kernel.org/stable/c/9376d059a705c5dfaac566c2d09891242013ae16Refgit.kernel.org/stable/c/93dd420bc41531c9a31498b9538ca83ba6ec191eRefgit.kernel.org/stable/c/abd32d7f5c0294c1b2454c5a3b13b18446bac627Refgit.kernel.org/stable/c/e668b92a3a01429923fd5ca13e99642aab47de69Refgit.kernel.org/stable/c/ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6Refgit.kernel.org/stable/c/01129059d5141d62fae692f7a336ae3bc712d3ebRefgit.kernel.org/stable/c/5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26793?

CVE-2024-26793 is a high-severity vulnerability. It was published on April 4, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26793?

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-2024-26793?

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-2024-26793?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26793 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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