CVE-2026-89506: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 5b2e45049dc06a876bc6b138218ddeb0814502ef преди 71d5c41ac583df09a7c32199bef7d42de7267d07; 5b2e45049dc06a876bc6b138218ddeb0814502ef преди 9e71d0f4944ba5641e01db29b3256c963656d671; 5b2e45049dc06a876bc6b138218ddeb0814502ef преди 011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf
• Linux Linux: 6.17; преди 6.17; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89506
• https://nvd.nist.gov/vuln/detail/CVE-2026-89506
• https://git.kernel.org/stable/c/71d5c41ac583df09a7c32199bef7d42de7267d07
• https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671
• https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf