{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38247","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:23.997Z","datePublished":"2025-07-09T10:42:28.531Z","dateUpdated":"2026-05-11T21:24:06.263Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:24:06.263Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nuserns and mnt_idmap leak in open_tree_attr(2)\n\nOnce want_mount_setattr() has returned a positive, it does require\nfinish_mount_kattr() to release ->mnt_userns.  Failing do_mount_setattr()\ndoes not change that.\n\nAs the result, we can end up leaking userns and possibly mnt_idmap as\nwell."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/namespace.c"],"versions":[{"version":"c4a16820d90199409c9bf01c4f794e1e9e8d8fd8","lessThan":"142db4e76110dd80239f4e79810f85ea1735ad60","status":"affected","versionType":"git"},{"version":"c4a16820d90199409c9bf01c4f794e1e9e8d8fd8","lessThan":"0748e553df0225754c316a92af3a77fdc057b358","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/namespace.c"],"versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.15.5","lessThanOrEqual":"6.15.*","status":"unaffected","versionType":"semver"},{"version":"6.16","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.15.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60"},{"url":"https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358"}],"title":"userns and mnt_idmap leak in open_tree_attr(2)","x_generator":{"engine":"bippy-1.2.0"}}}}