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.
Metrics
Affected Vendors & Products
References
History
Wed, 11 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Thu, 08 Aug 2024 19:00:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Redhat
Redhat enterprise Linux |
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CPEs | cpe:/a:redhat:enterprise_linux:8::nfv cpe:/o:redhat:enterprise_linux:8 |
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Vendors & Products |
Redhat
Redhat enterprise Linux |
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-06-19T14:53:46.750Z
Updated: 2024-09-11T17:34:52.936Z
Reserved: 2024-05-24T15:11:00.730Z
Link: CVE-2021-47579
Vulnrichment
Updated: 2024-09-11T12:42:26.538Z
NVD
Status : Awaiting Analysis
Published: 2024-06-19T15:15:52.427
Modified: 2024-06-20T12:43:25.663
Link: CVE-2021-47579
Redhat