{"id":"CVE-2025-68743","state":"PUBLISHED","title":"mshv: Fix create memory region overlap check","description":"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.","publishedAt":"2025-12-24T12:09:40.148Z","updatedAt":"2026-05-11T21:52:29.313Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"2183924dd834e0703f87e17c17e689bcbf55d69d","versionType":"git"},{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"ab3e7a78d83a61d335458cfe2e4d17eba69ae73d","versionType":"git"},{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"ba9eb9b86d232854e983203dc2fb1ba18e316681","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hv/mshv_root_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hv/mshv_root_main.c"]}],"references":["https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d","https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d","https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68743.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68743","state":"PUBLISHED","datePublished":"2025-12-24T12:09:40.148Z","dateUpdated":"2026-05-11T21:52:29.313Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.030Z"},"containers":{"cna":{"title":"mshv: Fix create memory region overlap check","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"2183924dd834e0703f87e17c17e689bcbf55d69d","versionType":"git"},{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"ab3e7a78d83a61d335458cfe2e4d17eba69ae73d","versionType":"git"},{"version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","status":"affected","lessThan":"ba9eb9b86d232854e983203dc2fb1ba18e316681","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hv/mshv_root_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hv/mshv_root_main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d"},{"url":"https://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d"},{"url":"https://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:52:29.313Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.17.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}