In the Linux kernel, the following vulnerability has been resolved:
ovl: fix warning in ovl_create_real()
Syzbot triggered the following warning in ovl_workdir_create() ->
ovl_create_real():
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 ovl_mkdir_real()
directly from ovl_workdir_create() and reject this case early.
References
Configurations
Configuration 1 (hide)
|
History
29 Sep 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c - Patch | |
| References | () https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8 - Patch | |
| References | () https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7 - Patch | |
| References | () https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02 - Patch | |
| References | () https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0 - Patch | |
| CWE | NVD-CWE-noinfo | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Information
Published : 2024-06-19 15:15
Updated : 2025-09-29 17:15
NVD link : CVE-2021-47579
Mitre link : CVE-2021-47579
CVE.ORG link : CVE-2021-47579
JSON object : View
Products Affected
linux
- linux_kernel
CWE