| ID |
CVE-2026-56113
|
| Sažetak |
dhcpcd through 10.3.2, fixed in commit 5733d3c, contains a heap use-after-free vulnerability that allows unauthenticated same-link attackers to crash the daemon by sending a crafted DHCPv6 RENEW reply with RFC6603 OPTION_PD_EXCLUDE and both preferred and valid lifetimes set to zero. Attackers acting as or impersonating a DHCPv6 server can trigger dhcp6_deprecatedele() to free a delegated child address while an outer TAILQ_FOREACH_SAFE iterator in dhcp6_deprecateaddrs() still holds the freed pointer, causing a use-after-free when TAILQ_REMOVE is reached. |
| Reference |
|
| CVSS |
| Base: | 5.3 |
| Impact: | 3.6 |
| Exploitability: | 1.6 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| ADJACENT_NETWORK |
HIGH |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| NONE |
NONE |
HIGH |
|
| CVSS vektor |
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Zadnje važnije ažuriranje |
23-06-2026 - 18:18 |
| Objavljeno |
23-06-2026 - 17:17 |
