CVE-2026-49412
EUVD-2026-3996427.06.2026, 09:16
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.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3:p1 |
| freebsd | freebsd | 14.3:p10 |
| freebsd | freebsd | 14.3:p11 |
| freebsd | freebsd | 14.3:p12 |
| freebsd | freebsd | 14.3:p13 |
| freebsd | freebsd | 14.3:p14 |
| freebsd | freebsd | 14.3:p2 |
| freebsd | freebsd | 14.3:p3 |
| freebsd | freebsd | 14.3:p4 |
| freebsd | freebsd | 14.3:p5 |
| freebsd | freebsd | 14.3:p6 |
| freebsd | freebsd | 14.3:p7 |
| freebsd | freebsd | 14.3:p8 |
| freebsd | freebsd | 14.3:p9 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4:p1 |
| freebsd | freebsd | 14.4:p2 |
| freebsd | freebsd | 14.4:p3 |
| freebsd | freebsd | 14.4:p4 |
| freebsd | freebsd | 14.4:p5 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0:p1 |
| freebsd | freebsd | 15.0:p2 |
| freebsd | freebsd | 15.0:p3 |
| freebsd | freebsd | 15.0:p4 |
| freebsd | freebsd | 15.0:p5 |
| freebsd | freebsd | 15.0:p6 |
| freebsd | freebsd | 15.0:p7 |
| freebsd | freebsd | 15.0:p8 |
| freebsd | freebsd | 15.0:p9 |
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= Vulnerable software versions
Common Weakness Enumeration
Vulnerability Media Exposure