CVE-2025-38112
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-38112
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38112.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-38112
- Downstream
- Related
- Published
- 2025-07-03T09:15:24Z
- Modified
- 2025-08-12T21:01:17Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: Fix TOCTOU issue in skisreadable()
sk->skprot->sockisreadable is a valid function pointer when sk resides in a sockmap. After the last skpsockput() (which usually happens when socket is removed from sockmap), sk->skprot gets restored and sk->skprot->sockis_readable becomes NULL.
This makes skisreadable() 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.
- References
-
- 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