CVE-2025-38112

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.

Database specific

{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38112.json"
}

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

8934ce2fd08171e8605f7fada91ee7619fe17ab8

Fixed

c2b26638476baee154920bb587fc94ff1bf04336

Fixed

6fa68d7eab34d448a61aa24ea31e68b3231ed20d

Fixed

8926a7ef1977a832dd6bf702f1a99303dbf15b15

Fixed

ff55c85a923e043d59d26b20a673a1b4a219c310

Fixed

1e0de7582ceccbdbb227d4e0ddf65732f92526da

Fixed

1b367ba2f94251822577daed031d6b9a9e11ba91

Fixed

2660a544fdc0940bba15f70508a46cf9a6491230

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38112.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

4.17.0

Fixed

5.10.239

Type: ECOSYSTEM
Events: Introduced

5.11.0

Fixed

5.15.186

Type: ECOSYSTEM
Events: Introduced

5.16.0

Fixed

6.1.142

Type: ECOSYSTEM
Events: Introduced

6.2.0

Fixed

6.6.94

Type: ECOSYSTEM
Events: Introduced

6.7.0

Fixed

6.12.34

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.15.3

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38112.json"