Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c before 445d2dc63e5871d218f21b8f62ab29ac72f2e6b8; affected e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c before f9f300a92297be8250547347fd52216ef0177ae0; affected e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c before 6859985a2fbda5d1586bf44538853e1be69e85f7; affected e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c before d2ccdd4e4efab06178608a34d7bfb20a54104c02; affected e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c before 1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c |
| Linux / Linux | affected 3.18; unaffected 0 before 3.18; unaffected 4.19.222 through 4.19.*; unaffected 5.4.168 through 5.4.*; unaffected 5.10.88 through 5.10.*; unaffected 5.15.11 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8
- https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
- https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7
- https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02
- https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8
- https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0
- https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7
- https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02
- https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c
No English description supplied.
No references supplied.