{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-38396", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.011Z", "datePublished": "2025-07-25T12:53:40.761Z", "dateUpdated": "2025-07-28T04:21:02.058Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-07-28T04:21:02.058Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass\n\nExport anon_inode_make_secure_inode() to allow KVM guest_memfd to create\nanonymous inodes with proper security context. This replaces the current\npattern of calling alloc_anon_inode() followed by\ninode_init_security_anon() for creating security context manually.\n\nThis change also fixes a security regression in secretmem where the\nS_PRIVATE flag was not cleared after alloc_anon_inode(), causing\nLSM/SELinux checks to be bypassed for secretmem file descriptors.\n\nAs guest_memfd currently resides in the KVM module, we need to export this\nsymbol for use outside the core kernel. In the future, guest_memfd might be\nmoved to core-mm, at which point the symbols no longer would have to be\nexported. When/if that happens is still unclear."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/anon_inodes.c", "include/linux/fs.h", "mm/secretmem.c"], "versions": [{"version": "2bfe15c5261212130f1a71f32a300bcf426443d4", "lessThan": "66d29d757c968d2bee9124816da5d718eb352959", "status": "affected", "versionType": "git"}, {"version": "2bfe15c5261212130f1a71f32a300bcf426443d4", "lessThan": "e3eed01347721cd7a8819568161c91d538fbf229", "status": "affected", "versionType": "git"}, {"version": "2bfe15c5261212130f1a71f32a300bcf426443d4", "lessThan": "f94c422157f3e43dd31990567b3e5d54b3e5b32b", "status": "affected", "versionType": "git"}, {"version": "2bfe15c5261212130f1a71f32a300bcf426443d4", "lessThan": "6ca45ea48530332a4ba09595767bd26d3232743b", "status": "affected", "versionType": "git"}, {"version": "2bfe15c5261212130f1a71f32a300bcf426443d4", "lessThan": "cbe4134ea4bc493239786220bd69cb8a13493190", "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/anon_inodes.c", "include/linux/fs.h", "mm/secretmem.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.146", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.97", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.6", "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": "6.0", "versionEndExcluding": "6.1.146"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.37"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959"}, {"url": "https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229"}, {"url": "https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b"}, {"url": "https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b"}, {"url": "https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190"}], "title": "fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass\n\nExport anon_inode_make_secure_inode() to allow KVM guest_memfd to create\nanonymous inodes with proper security context. This replaces the current\npattern of calling alloc_anon_inode() followed by\ninode_init_security_anon() for creating security context manually.\n\nThis change also fixes a security regression in secretmem where the\nS_PRIVATE flag was not cleared after alloc_anon_inode(), causing\nLSM/SELinux checks to be bypassed for secretmem file descriptors.\n\nAs guest_memfd currently resides in the KVM module, we need to export this\nsymbol for use outside the core kernel. In the future, guest_memfd might be\nmoved to core-mm, at which point the symbols no longer would have to be\nexported. When/if that happens is still unclear."}], "id": "CVE-2025-38396", "lastModified": "2025-07-25T15:29:19.837", "metrics": {}, "published": "2025-07-25T13:15:29.077", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass", "id": "2383441", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2383441"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass\nExport anon_inode_make_secure_inode() to allow KVM guest_memfd to create\nanonymous inodes with proper security context. This replaces the current\npattern of calling alloc_anon_inode() followed by\ninode_init_security_anon() for creating security context manually.\nThis change also fixes a security regression in secretmem where the\nS_PRIVATE flag was not cleared after alloc_anon_inode(), causing\nLSM/SELinux checks to be bypassed for secretmem file descriptors.\nAs guest_memfd currently resides in the KVM module, we need to export this\nsymbol for use outside the core kernel. In the future, guest_memfd might be\nmoved to core-mm, at which point the symbols no longer would have to be\nexported. When/if that happens is still unclear."], "name": "CVE-2025-38396", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38396\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38396\nhttps://lore.kernel.org/linux-cve-announce/2025072509-CVE-2025-38396-92a5@gregkh/T"], "threat_severity": "Moderate"}