{"id":"CVE-2026-93074","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndax/fsdev: use __va(phys) for kaddr in direct_access\n\nUse __va(phys) instead of virt_addr + linear_offset for the kaddr\nreturn in __fsdev_dax_direct_access()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndax/fsdev: use __va(phys) for kaddr in direct_access\n\nUse __va(phys) instead of virt_addr + linear_offset for the kaddr\nreturn in __fsdev_dax_direct_access(). The previ…","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","vendor":"Linux","product":"Linux","affected":["Linux >= 759455848df0b9ac3acabdbedcdc4a55af67935f < 7b642bd3d39105eef4d5908970726c5fda291b53","Linux >= 759455848df0b9ac3acabdbedcdc4a55af67935f < ff7c73fca793bd5c29a15ba735b0886f62f3a840","Linux 7.1"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:18:20.197","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93074","references":[{"url":"https://git.kernel.org/stable/c/7b642bd3d39105eef4d5908970726c5fda291b53","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ff7c73fca793bd5c29a15ba735b0886f62f3a840","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00129,"epssPercentile":0.02923,"ingestedAt":"2026-09-17T16:21:47.763Z","slug":"CVE-2026-93074","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndax/fsdev: use __va(phys) for kaddr in direct_access\n\nUse __va(phys) instead of virt_addr + linear_offset for the kaddr\nreturn in __fsdev_dax_direct_access(). The previous code added a\ndevice-linear byte offset to virt_addr (which is __va of ranges[0]),\nbut for multi-range devices with physical gaps between ranges, this\nlinear arithmetic crosses the gap and produces a wrong kernel virtual\naddress. Using __va(phys) where phys comes from dax_pgoff_to_phys()\nis correct for any range layout because the direct map translates\neach physical address independently.\n\nThis leaves dev_dax->virt_addr write-only, so remove the field\n(suggested by Dave Jiang).\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":[{"seq":207365,"id":"CVE-2026-93074","ts":1789757341387,"field":"cvss","old":null,"new":"7.8"},{"seq":207364,"id":"CVE-2026-93074","ts":1789757341387,"field":"severity","old":"none","new":"high"}]}