Към съдържанието
Търсене

CVE-2026-74631: 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: net: smc: fix splice entry lifetime imbalance in smc_rx_splice smc_rx_splice() passes pages to splice_to_pipe() before taking the references that cover the lifetime of each splice entry. In the VM-backed RMB path, splice_to_pipe() may drop unqueued entries through smc_rx_spd_release(), while queued entries are released later via the pipe buffer callback. The old post-splice accounting also derives the number of queued VM pages from an offset mutated while building the descriptor, and a multi-page splice pairs one sock_hold() with multiple sock_put() calls. Take the page and socket references for every candidate entry before splice_to_pipe(), and drop the matching private state, page reference, and socket reference from smc_rx_spd_release() for entries that never get queued. This fixes a refcount imbalance that can underflow page refcounts and trigger a use-after-free.

Засегнати продукти

  • Linux Linux: 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди 7ddc7af2ae7fc5a0c0635b245c0824c8b76de5cb; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди 07ad246529d136d5ef441d5ab4c305d132ff3090; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди c841789e456ec6751342fa800639ce8e82ff0e6b; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди af02c67ce654356c58db20a0bb2db33ace3b07a8; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди ca8342b5fc24c249fdb998468f6a168b457c67e5; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди 0b7d54cedea5cb158e21925ae0c6c2f5c87ed2a0; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди 4515c78f4d9fd577270f012efeb062ea58b3682d; 9014db202cb764b8e14c53e7bacc81f9a1a2ba7f преди 5d9686af2976741bbd79b150d1c9e60b81e7f12e
  • Linux Linux: 4.18; преди 4.18; 5.10.266 до 5.10.*; 5.15.217 до 5.15.*; 6.1.183 до 6.1.*; 6.6.152 до 6.6.*; 6.12.104 до 6.12.*; 6.18.45 до 6.18.*; 7.1.9 до 7.1.*; от 7.2 нататък

История

  • 22 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-74631: Linux | freedomonline.bg