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CVE-2023-54269: 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: SUNRPC: double free xprt_ctxt while still in use When an RPC request is deferred, the rq_xprt_ctxt pointer is moved out of the svc_rqst into the svc_deferred_req. When the deferred request is revisited, the pointer is copied into the new svc_rqst - and also remains in the svc_deferred_req. In the (rare?) case that the request is deferred a second time, the old svc_deferred_req is reused - it still has all the correct content. However in that case the rq_xprt_ctxt pointer is NOT cleared so that when xpo_release_xprt is called, the ctxt is freed (UDP) or possible added to a free list (RDMA). When the deferred request is revisited for a second time, it will reference this ctxt which may be invalid, and the free the object a second time which is likely to oops. So change svc_defer() to *always* clear rq_xprt_ctxt, and assert that the value is now stored in the svc_deferred_req.

Засегнати продукти

  • Linux Linux: f5e13d700a4d40ccde3d36e383f9247dcb3c1d2d преди 7851771789e87108a92697194105ef0c9307dc5e; 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 преди fd86534872f445f54dc01e7db001e25eadf063a8; 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 преди e0c648627322a4c7e018e5c7f837c3c03e297dbb; 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 преди eb8d3a2c809abd73ab0a060fe971d6b9019aa3c1; 11fab500f86403b2ebf6795feeade6e10302e448; 5.15.35 преди 5.15.113; 5.17.4 преди 5.18
  • Linux Linux: 5.18; преди 5.18; 5.15.113 до 5.15.*; 6.1.30 до 6.1.*; 6.3.4 до 6.3.*; от 6.4 нататък

История

  • 30 декември 2025 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2023-54269: Linux | freedomonline.bg