{"id":"CVE-2026-74296","title":"RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Release the HW‑provided UAR index rather than the SW one\n\nFree the UAR index returned by the hardware.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 80f1f49f53a42733e60c90e0ec545e647969214d","Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < aabfc845838ef453f1d22d7665596f9cc48be7dd","Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee","Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < d3ff718c0c7153e2641e6a09507bace14fc5c402","Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < ef369446f62903ea079e8a7954b5bf8bb8300fe3","Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 449ae7927152e46acbe5f19f97eafdae6d3a96b1","Linux 4.16"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:52:36.442847Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:55:31.271Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74296","references":[{"url":"https://git.kernel.org/stable/c/80f1f49f53a42733e60c90e0ec545e647969214d"},{"url":"https://git.kernel.org/stable/c/aabfc845838ef453f1d22d7665596f9cc48be7dd"},{"url":"https://git.kernel.org/stable/c/6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee"},{"url":"https://git.kernel.org/stable/c/d3ff718c0c7153e2641e6a09507bace14fc5c402"},{"url":"https://git.kernel.org/stable/c/ef369446f62903ea079e8a7954b5bf8bb8300fe3"},{"url":"https://git.kernel.org/stable/c/449ae7927152e46acbe5f19f97eafdae6d3a96b1"}],"tags":["cve.org"],"epss":0.00176,"epssPercentile":0.06635,"ingestedAt":"2026-10-16T19:46:24.383Z","slug":"CVE-2026-74296","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Release the HW‑provided UAR index rather than the SW one\n\nFree the UAR index returned by the hardware.\n\n## Affected\n\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 80f1f49f53a42733e60c90e0ec545e647969214d`\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < aabfc845838ef453f1d22d7665596f9cc48be7dd`\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 6f83de384ca582fa87b4c2b0d03bd1ed3bf9a2ee`\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < d3ff718c0c7153e2641e6a09507bace14fc5c402`\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < ef369446f62903ea079e8a7954b5bf8bb8300fe3`\n- `Linux >= 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 < 449ae7927152e46acbe5f19f97eafdae6d3a96b1`\n- `Linux 4.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}