CVE-2026-74395

CVE CVE-2026-74395EUVD EUVD-2026-59542Published 2026-08-15T05:59:07.000ZLast changed 2026-08-17T05:18:34.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix devx subscribe-event unwind NULL dereference MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT() links event_sub into sub_list before initializing the fields used by the shared error path. If eventfd_ctx_fdget() then fails, the unwind path dereferences event_sub->ev_file in uverbs_uobject_put() and calls subscribe_event_xa_dealloc() with an unset xa_key_level1. subscribe_event_xa_alloc() creates the XA entry exactly once for a given key_level1, on the first occurrence of that key. The unwind path must therefore call subscribe_event_xa_dealloc() exactly once for it as well. Enforce that by adding devx_key_in_sub_list() and calling subscribe_event_xa_dealloc() only when the last matching pending entry is being cleaned up.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; 7597385371425febdaa8c6a1da3625d4ffff16f5 <5100febf8e9d6c8c5ba8dc6534c6a5e3376e5989; 7597385371425febdaa8c6a1da3625d4ffff16f5 <9be9aca28424228586fe9211c373ebdb826ebb6c; patch: 7.1.5; 5.3; 7597385371425febdaa8c6a1da3625d4ffff16f5 <f345e744b6b087188cde2377da5cbe9713b61353; 7597385371425febdaa8c6a1da3625d4ffff16f5 <7921821fc2b19c01588311f6e7468ae5b68b1f61; patch: 6.18.40; patch: 5.15.212; patch: 5.10.261; 7597385371425febdaa8c6a1da3625d4ffff16f5 <6e15b770461eeaa0ff73934922cb670a6a9db04e; 7597385371425febdaa8c6a1da3625d4ffff16f5 <78b9589fda266c71f0f9d0c858d4fa7381a890a5; patch: 6.6.145; patch: 6.1.178; patch: 7.2; 7597385371425febdaa8c6a1da3625d4ffff16f5 <1025dc2f7ba29b04b8687790fa91f9cd1a53141e; 7597385371425febdaa8c6a1da3625d4ffff16f5 <43f8f7946814c8e5f464518246fdbc69b6e32326; patch: 6.12.97

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

Does this concern one of your customers?

This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.

Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.