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CVE-2026-89526: Linux

9.8

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 по мрежата, без особени условия, без вход и без действие от потребителя.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Validate Read chunk positions before reconstruction The RPC/RDMA Read chunk position field is supplied by the remote client and stored verbatim in the parsed chunk list. xdr_count_read_segments() checks only 4-byte alignment; it never compares the position against the received inline body length. In the single-chunk path, svc_rdma_read_complete_one() splits the head and tail kvecs at ch_position. A position past the inline body underflows the tail length, exposing adjacent slab memory to the upper XDR decoder. In the multi-chunk path, svc_rdma_read_multiple_chunks() computes gap lengths between chunks as unsigned subtractions from ch_position. Overlapping Read chunks cause these subtractions to underflow. A final position past the inline body likewise underflows the trailing gap length. svc_rdma_copy_inline_range() then copies past the receive buffer into request pages that are returned to the client through the Reply channel. Bound inline-range copies in svc_rdma_copy_inline_range() against the decoded inline RPC body saved in rc_saved_arg. Reject a single Read chunk positioned beyond that body, and reject multi-chunk lists where accumulated read bytes exceed the next chunk's position. Apply the same position and overlap checks in the call-chunk interleaving path.

Засегнати продукти

  • Linux Linux: d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди 6388f2ed36c10f59d926735b92c2b152d2c635e5; d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди 3861eeabaebe243050952b34063763527c44e1fe; d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди 5ab3f6d882fe07ae5e61d0bcfeea00b9409155c2; d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди f84ec84d8d4bc65f9ae23372570349687f66fa39; d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди 577097455d084610fc31e91e6a61c5793b6f04ba; d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 преди 3779b7b9e7d1c8ba4738f9d327de3b0288cefe9b
  • Linux Linux: 5.11; преди 5.11; 6.1.191 до 6.1.*; 6.6.160 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-2026-89526: Linux | freedomonline.bg