CVE-2025-38112 | Teknoloji dünyasından en güncel haberleri ve güvenlikle ilgili gelişmeleri takip edin.

In the Linux kernel, the following vulnerability has been resolved: net: Fix TOCTOU issue in sk_is_readable() sk->sk_prot->sock_is_readable is a valid functio…
Medium CVSS: 4.7

CVE-2025-38112

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

net: Fix TOCTOU issue in sk_is_readable()

sk->sk_prot->sock_is_readable is a valid function pointer when sk resides
in a sockmap. After the last sk_psock_put() (which usually happens when
socket is removed from sockmap), sk->sk_prot gets restored and
sk->sk_prot->sock_is_readable becomes NULL.

This makes sk_is_readable() racy, if the value of sk->sk_prot is reloaded
after the initial check. Which in turn may lead to a null pointer
dereference.

Ensure the function pointer does not turn NULL after the check.
Vendor
Linux
Product
Linux Kernel
CWE
CWE-367
Yayın Tarihi
2025-07-03 09:15:24
Güncelleme
2025-12-17 18:13:47
Source Identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
KEV Date Added
-

Kategoriler

CWE-367 Linux Kernel MEDIUM Linux 2025

Referanslar

https://git.kernel.org/stable/c/1b367ba2f94251822577daed031d6b9a9e11ba91 https://git.kernel.org/stable/c/1e0de7582ceccbdbb227d4e0ddf65732f92526da https://git.kernel.org/stable/c/2660a544fdc0940bba15f70508a46cf9a6491230 https://git.kernel.org/stable/c/6fa68d7eab34d448a61aa24ea31e68b3231ed20d https://git.kernel.org/stable/c/8926a7ef1977a832dd6bf702f1a99303dbf15b15 https://git.kernel.org/stable/c/c2b26638476baee154920bb587fc94ff1bf04336 https://git.kernel.org/stable/c/ff55c85a923e043d59d26b20a673a1b4a219c310 https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html