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CVE-2026-80932: Linux

8.4

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, без вход и без действие от потребителя.

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: flush works in dependency order virtio_vsock_remove() stops the virtqueues and then flushes each work item before freeing the enclosing virtio_vsock. The current order does not account for dependencies between those items: tx_work may queue send_pkt_work, and send_pkt_work may queue rx_work. In particular, send_pkt_work can set restart_rx and release tx_lock. The remove path can then stop the queues and flush rx_work before send_pkt_work queues it. Although the later send_pkt_work flush waits for that producer to finish, nothing waits for the newly queued rx_work, so kfree(vsock) can race with it. KASAN reported: BUG: KASAN: slab-use-after-free in virtio_transport_rx_work+0x487/0x4b0 Read of size 8 at addr ffff888114c2b008 by task kworker/1:1/47 Workqueue: virtio_vsock virtio_transport_rx_work Call Trace: virtio_transport_rx_work+0x487/0x4b0 process_one_work+0x688/0x1120 worker_thread+0x45b/0xd10 Allocated by task 1: virtio_vsock_probe+0xef/0x6b0 Freed by task 84: kfree+0x131/0x3c0 virtio_vsock_remove+0xd1/0x100 Flush the works in producer-to-consumer order. virtio_vsock_vqs_del() has already disabled the queue callbacks and cleared the run flags, so after tx_work and send_pkt_work are drained, no source remains that can queue rx_work after its flush.

Засегнати продукти

  • Linux Linux: 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди e059a14c1067bcc4f7b1947cd09f2baab98e340f; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди 531e2ac2dab1ab90a16427c4f9c86663633e9487; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди f3313d952fc380cff53db9a28451a8807aa67b43; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди 2187a56f2fd1715d54daed6392809223c60544f3; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди 165a330a68b5f299d8735f0194c314cb2e571269; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди da5e9f08714c19ba04e6863aca69d40f042f2e04; 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 преди 728836ebca239810f164262b10211ef59182f811
  • Linux Linux: 4.8; преди 4.8; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

  • 11 септември 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80932: Linux | freedomonline.bg