CVE-2021-47579
- Source
- https://cve.org/CVERecord?id=CVE-2021-47579
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47579.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47579
- Downstream
- Related
- Published
- 2024-06-19T15:15:52.427Z
- Modified
- 2026-03-15T22:43:15.891373Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ovl: fix warning in ovlcreatereal()
Syzbot triggered the following warning in ovlworkdircreate() -> ovlcreatereal():
if (!err && WARN_ON(!newdentry->d_inode)) {The reason is that the cgroup2 filesystem returns from mkdir without instantiating the new dentry.
Weird filesystems such as this will be rejected by overlayfs at a later stage during setup, but to prevent such a warning, call ovlmkdirreal() directly from ovlworkdircreate() and reject this case early.
- References
-
- https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
- https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c
- https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8
- https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7
- https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.19.222"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.168"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.88"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.15.11"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47579.json"