{"apiVersion":"1.0","identifier":"CVE-2026-99122","description":"In the Linux kernel, the following vulnerability has been resolved: vsock/vmci: validate packet source for connected sockets vmci_transport_recv_stream_cb() looks up sockets first by the full source and destination tuple, then by destination only in the bound table. The fallback can select a non-listening socket without checking whether the packet came from its stored peer. This was reproduced with two VMCI contexts. A RST from the context not stored in a TCP_SYN_SENT socket reset that socket after it was selected by the destination-only lookup. VMCI can process notification packets in bottom-half context when the socket is not owned by user context, or defer packets to a workqueue. Use vsock_check_source() after taking the socket lock in the bottom-half path, and recheck after lock_sock() in the workqueue path. Listening sockets continue to accept packets from any source. Reply with a RST addressed from the received packet before dropping a source that fails validation. This preserves the existing reset behavior for bound non-listening and concurrently closed sockets without directing the reset to a connected socket-s stored peer.","publishedAt":"2026-10-28T11:17:31","lastModifiedAt":"2026-11-10T19:22:30","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-99122","cvssScore":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H","epssProbability":0.00121,"riskScore":0.74,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-99122","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-99122","en":"https://www.redsauce.net/en/cves/CVE-2026-99122","fr":"https://www.redsauce.net/fr/cves/CVE-2026-99122","pt":"https://www.redsauce.net/pt/cves/CVE-2026-99122","de":"https://www.redsauce.net/de/cves/CVE-2026-99122","sk":"https://www.redsauce.net/sk/cves/CVE-2026-99122","el":"https://www.redsauce.net/el/cves/CVE-2026-99122"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-99122"}}