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CVE-2026-89549: Linux

7.5

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: sunrpc: route to a populated pool in svc_pool_for_cpu() svc_set_num_threads() spreads the requested threads evenly across the service's pools (base = nrservs / sv_nrpools). When a service runs fewer threads than it has pools -- e.g. an nfsd configured with fewer threads than the host has NUMA nodes while running in "pernode" or "percpu" mode -- the trailing pools are left with no threads at all. svc_xprt_enqueue() selects a pool from the CPU servicing the transport, queues the transport on that pool's sp_xprts, and only wakes a thread from the same pool. Each thread services exclusively its own pool, so a transport that lands on a threadless pool is enqueued on sp_xprts and never picked up: the connection hangs indefinitely. Have svc_pool_for_cpu() skip pools that currently have no threads, falling back to the next populated pool. This trades NUMA locality for a guarantee that the work is actually serviced. sp_nrthreads is only updated under the service mutex; the lockless read here is a best-effort routing hint, so annotate it with data_race().

Засегнати продукти

  • Linux Linux: bfd241600a3b0db4fe43c859f1460d0a958d924a преди 9accc25e5af0bac8479f6054e674b2c593c45281; bfd241600a3b0db4fe43c859f1460d0a958d924a преди 6f66d38e2a6c78d48723ea17ad86135ec80ca24b; bfd241600a3b0db4fe43c859f1460d0a958d924a преди d79d7b9e8acbb53e2d60f6b24afc13e2f15e691f; bfd241600a3b0db4fe43c859f1460d0a958d924a преди edb20e8c03aebacb409968c99d046f509c6c485a; bfd241600a3b0db4fe43c859f1460d0a958d924a преди 011479cf9a7657d4a3e7cc42a784ac63df594170; bfd241600a3b0db4fe43c859f1460d0a958d924a преди 9d04d64ad192439835ed9884d767353061c3ed6f; bfd241600a3b0db4fe43c859f1460d0a958d924a преди 8f766d2d0b4dabf54f8b35812df2b4f481d13316; bfd241600a3b0db4fe43c859f1460d0a958d924a преди f6310491c4cdb88af73aa551ec9df1f10a90c709
  • Linux Linux: 2.6.19; преди 2.6.19; 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-2026-89549: Linux | freedomonline.bg