{"id":"CVE-2025-68743","summary":"mshv: Fix create memory region overlap check","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmshv: Fix create memory region overlap check\n\nThe current check is incorrect; it only checks if the beginning or end\nof a region is within an existing region. This doesn't account for\nuserspace specifying a region that begins before and ends after an\nexisting region.\n\nChange the logic to a range intersection check against gfns and uaddrs\nfor each region.\n\nRemove mshv_partition_region_by_uaddr() as it is no longer used.","modified":"2026-04-02T13:03:46.162591Z","published":"2025-12-24T12:09:40.148Z","related":["SUSE-SU-2026:20555-1","SUSE-SU-2026:20599-1","SUSE-SU-2026:20615-1","openSUSE-SU-2026:10039-1","openSUSE-SU-2026:10301-1","openSUSE-SU-2026:20287-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68743.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68743.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68743"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"621191d709b14882270dfd8ea5d7d6cdfebe2c35"},{"fixed":"2183924dd834e0703f87e17c17e689bcbf55d69d"},{"fixed":"ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"},{"fixed":"ba9eb9b86d232854e983203dc2fb1ba18e316681"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68743.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.17.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68743.json"}}],"schema_version":"1.7.5"}