CVE-2026-89506
CVE CVE-2026-89506EUVD EUVD-2026-76412Published 2026-09-11T19:43:53.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR The original commit missed that three drivers (mthca, irdma, siw) have UHW data associated with reg_mr that cannot be passed through the ioctl. They also assume that the udata cannot be NULL, so failing to pass a valid udata can trigger a NULL udata crash in those drivers. This never happens in real systems since in rdma-core ibv_cmd_reg_mr_ex() does not accept a udata and those three drivers don't use it, however a malicious userspace could trigger it.
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: 6.18.50; 6.17; patch: 7.2.4; patch: 7.3-rc1; 5b2e45049dc06a876bc6b138218ddeb0814502ef <71d5c41ac583df09a7c32199bef7d42de7267d07; 5b2e45049dc06a876bc6b138218ddeb0814502ef <9e71d0f4944ba5641e01db29b3256c963656d671; 5b2e45049dc06a876bc6b138218ddeb0814502ef <011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf; patch: 0
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
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