CVE-2026-49412
Vulnerability Description
The kernel handler for IPV6_MSFILTER dropped a serializing lock in order to copy the source-filter list from userspace, then reacquired the lock. During this window another thread could free the multicast filter structure, leaving the handler with a stale pointer to freed memory.
An unprivileged local user can exploit this use-after-free to escalate privileges.
An unprivileged local user can exploit this use-after-free to escalate privileges.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-416
Source
NVD
Vendor
FreeBSD
Product
FreeBSD
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