In FreeBSD 13.0-STABLE before n245050, 12.2-STABLE before r369525, 13.0-RC4 before p0, and 12.2-RELEASE before p6, listening socket accept filters implementing the accf_create callback incorrectly freed a process supplied argument string. Additional operations on the socket can lead to a double free or use after free.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Freebsd | Freebsd | 12.0 (including) | 12.2 (excluding) |
| Freebsd | Freebsd | 12.2 (including) | 12.2 (including) |
| Freebsd | Freebsd | 12.2-p1 (including) | 12.2-p1 (including) |
| Freebsd | Freebsd | 12.2-p2 (including) | 12.2-p2 (including) |
| Freebsd | Freebsd | 13.0-beta1 (including) | 13.0-beta1 (including) |
| Freebsd | Freebsd | 13.0-beta2 (including) | 13.0-beta2 (including) |
| Freebsd | Freebsd | 13.0-beta3 (including) | 13.0-beta3 (including) |
| Freebsd | Freebsd | 13.0-beta4 (including) | 13.0-beta4 (including) |
| Freebsd | Freebsd | 13.0-rc1 (including) | 13.0-rc1 (including) |
| Freebsd | Freebsd | 13.0-rc2 (including) | 13.0-rc2 (including) |
| Freebsd | Freebsd | 13.0-rc3 (including) | 13.0-rc3 (including) |