CVE - CVE-2021-47579

CVE-ID
CVE-2021-47579	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c URL:https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c MISC:https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8 URL:https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8 MISC:https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7 URL:https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7 MISC:https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02 URL:https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02 MISC:https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0 URL:https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
Assigning CNA
kernel.org
Date Record Created
20240524	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240524)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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