AZL-64553
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64553.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-64553
- Upstream
- Published
- 2025-07-03T09:15:24Z
- Modified
- 2026-04-01T05:20:49.130821Z
- Summary
- CVE-2025-38112 affecting package kernel for versions less than 6.6.96.1-1
- 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