{"id":"CVE-2026-93074","revision":"3bb70e6b968f4d3786021a8a0d4c2f08","records":[{"revision":"3bb70e6b968f4d3786021a8a0d4c2f08","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93074","aliases":[],"title":"dax/fsdev: use __va(phys) for kaddr in direct_access","description":"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 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).","state":0,"publishedAt":"2026-09-17T16:10:57.051+00:00","modifiedAt":"2026-10-19T09:05:10.055+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dax/dax-private.h\",\n                        \"drivers/dax/fsdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"759455848df0b9ac3acabdbedcdc4a55af67935f\",\n                            \"lessThan\": \"7b642bd3d39105eef4d5908970726c5fda291b53\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"759455848df0b9ac3acabdbedcdc4a55af67935f\",\n                            \"lessThan\": \"ff7c73fca793bd5c29a15ba735b0886f62f3a840\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dax/dax-private.h\",\n                        \"drivers/dax/fsdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/7b642bd3d39105eef4d5908970726c5fda291b53","https://git.kernel.org/stable/c/ff7c73fca793bd5c29a15ba735b0886f62f3a840"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93074","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93074","identifiers":["CVE-2026-93074"]},"retained":false,"historicalAffected":[]}],"coverage":[]}