{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47579", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:11:00.730Z", "datePublished": "2024-06-19T14:53:46.750Z", "dateUpdated": "2026-05-11T13:57:17.709Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:57:17.709Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\novl: fix warning in ovl_create_real()\n\nSyzbot triggered the following warning in ovl_workdir_create() ->\novl_create_real():\n\n\tif (!err && WARN_ON(!newdentry->d_inode)) {\n\nThe reason is that the cgroup2 filesystem returns from mkdir without\ninstantiating the new dentry.\n\nWeird filesystems such as this will be rejected by overlayfs at a later\nstage during setup, but to prevent such a warning, call ovl_mkdir_real()\ndirectly from ovl_workdir_create() and reject this case early." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/overlayfs/dir.c", "fs/overlayfs/overlayfs.h", "fs/overlayfs/super.c" ], "versions": [ { "version": "e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c", "lessThan": "445d2dc63e5871d218f21b8f62ab29ac72f2e6b8", "status": "affected", "versionType": "git" }, { "version": "e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c", "lessThan": "f9f300a92297be8250547347fd52216ef0177ae0", "status": "affected", "versionType": "git" }, { "version": "e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c", "lessThan": "6859985a2fbda5d1586bf44538853e1be69e85f7", "status": "affected", "versionType": "git" }, { "version": "e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c", "lessThan": "d2ccdd4e4efab06178608a34d7bfb20a54104c02", "status": "affected", "versionType": "git" }, { "version": "e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c", "lessThan": "1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c", "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/overlayfs/dir.c", "fs/overlayfs/overlayfs.h", "fs/overlayfs/super.c" ], "versions": [ { "version": "3.18", "status": "affected" }, { "version": "0", "lessThan": "3.18", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.222", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.168", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.88", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.11", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16", "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": "3.18", "versionEndExcluding": "4.19.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.4.168" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.10.88" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8" }, { "url": "https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0" }, { "url": "https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7" }, { "url": "https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02" }, { "url": "https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c" } ], "title": "ovl: fix warning in ovl_create_real()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.680Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47579", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T17:12:49.599246Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:52.936Z" } } ] } }