CVE-2025-38112
Description
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.
How to fix
- linux linux_kernel5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3 or later
- git.kernel.org/stable/c/1b367ba2f94251822577daed031d6b9a9e11ba91
- git.kernel.org/stable/c/1e0de7582ceccbdbb227d4e0ddf65732f92526da
- git.kernel.org/stable/c/2660a544fdc0940bba15f70508a46cf9a6491230
- git.kernel.org/stable/c/6fa68d7eab34d448a61aa24ea31e68b3231ed20d
- git.kernel.org/stable/c/8926a7ef1977a832dd6bf702f1a99303dbf15b15
- git.kernel.org/stable/c/c2b26638476baee154920bb587fc94ff1bf04336
- git.kernel.org/stable/c/ff55c85a923e043d59d26b20a673a1b4a219c310
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.17 ≤ v < 5.10.239, 5.11 ≤ v < 5.15.186, 5.16 ≤ v < 6.1.142, 6.2 ≤ v < 6.6.94, 6.7 ≤ v < 6.12.34, 6.13 ≤ v < 6.15.3, 6.16 | 5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3 |
| debian debian_linux | 11.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.