CVE-2021-47579

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.

The following products are affected by CVE-2021-47579 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47579.

URL	Resource
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
https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
https://lore.kernel.org/linux-cve-announce/2024061915-CVE-2021-47579-4f78@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47579
https://www.cve.org/CVERecord?id=CVE-2021-47579