CVE-2024-46677 gtp: fix a potential NULL pointer dereference

What is CVE-2024-46677?

CVE-2024-46677 is a medium-severity vulnerability in Linux kernel, published on 13 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

gtp: fix a potential NULL pointer dereference

When sockfd_lookup() fails, gtp_encap_enable_socket() returns a NULL pointer, but its callers only check for error pointers thus miss the NULL pointer case.

Fix it by returning an error pointer with the error code carried from sockfd_lookup().

(I found this bug during code inspection.)

Weakness: CWE-476

Which versions are affected by CVE-2024-46677?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-46677?

Apply the vendor's patch.

Is CVE-2024-46677 being exploited?

There is no known exploitation of CVE-2024-46677 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-49167, AZL-49227, BELL-CVE-2024-46677, DEBIAN-CVE-2024-46677, GHSA-64qj-9hxc-x9rc, UBUNTU-CVE-2024-46677.