CVE-2026-90435
CVE CVE-2026-90435EUVD EUVD-2026-82096Published 2026-09-17T16:09:54.000ZLast changed 2026-09-18T17:55:24.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix integer overflow of user QP buffer size set_user_buf_size() computes the QP buffer size by left-shifting the user-supplied rq.wqe_cnt and rq.wqe_shift values as signed integers. A sufficiently large rq.wqe_cnt causes signed integer overflow, which is undefined behavior, and yields a small or negative buf_size, causing ib_umem_get() to map a buffer smaller than the hardware will actually write into. Replace the shifts and addition with check_shl_overflow() and check_add_overflow(), rejecting invalid user inputs. Moreover, guard the identical shift computing qp->sq.offset in _create_user_qp() before set_user_buf_size() is reached.
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: 7.3-rc1; 3.11; patch: 7.2.6; patch: 5.15.221; patch: 6.12.110; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <5b6cfc6d7ff0959dd9766fdc24286a253b59ca77; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <d7fa2ff72ad1861eac194a4e0075d504ba8c246e; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <c845e5e05140ea1bc64a5b1107942d93c876034d; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <dec47e4b0fe34afdf38caa72b4408ba95502e5de; patch: 6.1.188; patch: 5.10.270; patch: 6.6.157; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <42fb8aefffff5b458aaa66803364a16e0ea44129; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <d99622e40aaa910ade681dfd4dc0fa240a011331; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <ccce6b7ef1d7efc59ccba3421e1339c6e63a3d20; patch: 6.18.52; patch: 0; e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c <f917707f0de0832b8ab582391b1f64e549995c6c
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 daysPatchlage 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.