CVE-2021-47579
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ovl: fix warning in ovl_create_real()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c | affected | git | 445d2dc63e5871d218f21b8f62ab29ac72f2e6b8 | Unavailable | None listed |
| e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c | affected | git | f9f300a92297be8250547347fd52216ef0177ae0 | Unavailable | None listed |
| e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c | affected | git | 6859985a2fbda5d1586bf44538853e1be69e85f7 | Unavailable | None listed |
| e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c | affected | git | d2ccdd4e4efab06178608a34d7bfb20a54104c02 | Unavailable | None listed |
| e9be9d5e76e34872f0c37d72e25bc27fe9e2c54c | affected | git | 1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.18 | Unavailable | None listed |
| 4.19.222 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.168 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.88 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.11 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16 | unaffected | original_commit_for_fix | Unavailable | * | None listed |