{"id":"CVE-2026-97421","published":"2026-09-24T17:17:19.993","lastModified":"2026-09-25T13:17:25.643","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()\n\nSeveral corner cases, especially important on 32 bits:\n\n- umem->iova is u64, the function argument should pass in u64 or\n  iova will be truncated\n- Check that the length is not too large for the iova\n- Check that lengths > 4G don't overflow the GENMASK","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcf","tags":[]},{"url":"https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8","tags":[]},{"url":"https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2a","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}