Vulnerability CVE-2024-46677
Published: 2024-09-13

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.)

 References:
https://git.kernel.org/stable/c/620fe9809752fae91b4190e897b81ed9976dfb39
https://git.kernel.org/stable/c/bdd99e5f0ad5fa727b16f2101fe880aa2bff2f8e
https://git.kernel.org/stable/c/8bbb9e4e0e66a39282e582d0440724055404b38c
https://git.kernel.org/stable/c/4643b91691e969b1b9ad54bf552d7a990cfa3b87
https://git.kernel.org/stable/c/e8b9930b0eb045d19e883c65ff9676fc89320c70
https://git.kernel.org/stable/c/28c67f0f84f889fe9f4cbda8354132b20dc9212d
https://git.kernel.org/stable/c/612edd35f2a3910ab1f61c1f2338889d4ba99fa2
https://git.kernel.org/stable/c/defd8b3c37b0f9cb3e0f60f47d3d78d459d57fda
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