{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-53172", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T13:59:19.064Z", "datePublished": "2025-09-15T14:04:06.075Z", "dateUpdated": "2025-09-15T14:04:06.075Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-15T14:04:06.075Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsverity: reject FS_IOC_ENABLE_VERITY on mode 3 fds\n\nCommit 56124d6c87fd (\"fsverity: support enabling with tree block size <\nPAGE_SIZE\") changed FS_IOC_ENABLE_VERITY to use __kernel_read() to read\nthe file's data, instead of direct pagecache accesses.\n\nAn unintended consequence of this is that the\n'WARN_ON_ONCE(!(file->f_mode & FMODE_READ))' in __kernel_read() became\nreachable by fuzz tests. This happens if FS_IOC_ENABLE_VERITY is called\non a fd opened with access mode 3, which means \"ioctl access only\".\n\nArguably, FS_IOC_ENABLE_VERITY should work on ioctl-only fds. But\nioctl-only fds are a weird Linux extension that is rarely used and that\nfew people even know about. (The documentation for FS_IOC_ENABLE_VERITY\neven specifically says it requires O_RDONLY.) It's probably not\nworthwhile to make the ioctl internally open a new fd just to handle\nthis case. Thus, just reject the ioctl on such fds for now."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/verity/enable.c"], "versions": [{"version": "56124d6c87fd749477425110d2564166621a89c4", "lessThan": "85c039cff3c359967cafe90443c02321e950b216", "status": "affected", "versionType": "git"}, {"version": "56124d6c87fd749477425110d2564166621a89c4", "lessThan": "04839139213cf60d4c5fc792214a08830e294ff8", "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/verity/enable.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.3.1", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4", "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": "6.3", "versionEndExcluding": "6.3.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/85c039cff3c359967cafe90443c02321e950b216"}, {"url": "https://git.kernel.org/stable/c/04839139213cf60d4c5fc792214a08830e294ff8"}], "title": "fsverity: reject FS_IOC_ENABLE_VERITY on mode 3 fds", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsverity: reject FS_IOC_ENABLE_VERITY on mode 3 fds\n\nCommit 56124d6c87fd (\"fsverity: support enabling with tree block size <\nPAGE_SIZE\") changed FS_IOC_ENABLE_VERITY to use __kernel_read() to read\nthe file's data, instead of direct pagecache accesses.\n\nAn unintended consequence of this is that the\n'WARN_ON_ONCE(!(file->f_mode & FMODE_READ))' in __kernel_read() became\nreachable by fuzz tests. This happens if FS_IOC_ENABLE_VERITY is called\non a fd opened with access mode 3, which means \"ioctl access only\".\n\nArguably, FS_IOC_ENABLE_VERITY should work on ioctl-only fds. But\nioctl-only fds are a weird Linux extension that is rarely used and that\nfew people even know about. (The documentation for FS_IOC_ENABLE_VERITY\neven specifically says it requires O_RDONLY.) It's probably not\nworthwhile to make the ioctl internally open a new fd just to handle\nthis case. Thus, just reject the ioctl on such fds for now."}], "id": "CVE-2023-53172", "lastModified": "2025-09-15T15:22:27.090", "metrics": {}, "published": "2025-09-15T14:15:39.057", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/04839139213cf60d4c5fc792214a08830e294ff8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85c039cff3c359967cafe90443c02321e950b216"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: fsverity: reject FS_IOC_ENABLE_VERITY on mode 3 fds", "id": "2395291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395291"}, "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": ["No description is available for this CVE."], "name": "CVE-2023-53172", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53172\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53172\nhttps://lore.kernel.org/linux-cve-announce/2025091554-CVE-2023-53172-3f93@gregkh/T"], "threat_severity": "Moderate"}