CVE-2025-24934
Software which sets SO_REUSEPORT_LB on a socket and then connects it to a host will not directly observe any problems. However, due to its membership in a load-balancing group, that socket will receive packets originating from any host. This breaks the contract of the connect(2) and implied connect via sendto(2), and may leave the application vulnerable to spoofing attacks. The kernel failed to check the connection state of sockets when adding them to load-balancing groups. Furthermore, when looking up the destination socket for an incoming packet, the kernel will match a socket belonging to a load-balancing group even if it is connected, in violation of the contract that connected sockets are only supposed to receive packets originating from the connected host.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.4
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS probability
- 0.20%
- CWE
- CWE-488
- Published
- 2025-10-22
- Last modified
- 2026-04-24
Affected products
- FreeBSD FreeBSD
- FreeBSD FreeBSD
- FreeBSD FreeBSD
Weakness type
Related vulnerabilities
- CVE-2026-84685 — Improper Cache Isolation in auth0/react-native-auth0 SDK Web Platform Credential Management
- CVE-2026-86492 — In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub...
- CVE-2026-18489 — IBM ContextForge Translate is affected by cross-client credential context confusion
- CVE-2026-82367 — Re-entrant synchronous publish in AshGraphql subscription batcher delivers one subscriber's records to another's topic
- CVE-2026-71850 — Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure
- CVE-2026-16326 — consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
- CVE-2026-16498 — terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
- CVE-2026-54497 — view_component: Reused Component Instances Retain Stale Render Context