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CVE-2026-99122: Linux

7.3

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    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.

    Засегнати продукти

    • Linux Linux: d021c344051af91f42c5ba9fdedc176740cbd238 преди c027f8b429dbb2157fc1b503df196e272d947c89; d021c344051af91f42c5ba9fdedc176740cbd238 преди 90c423b62ec9be08177f74b07a47937ca8d2035b; d021c344051af91f42c5ba9fdedc176740cbd238 преди ad9a7da3fa39c2d616ec0dd3cf6e30531d032fe7
    • Linux Linux: 3.9; преди 3.9; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък

    История

    • 28 октомври 2026 Публикувано

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    Първоизточници

    CVE-2026-99122: Linux | freedomonline.bg