CVE-2021-47579 ovl: fix warning in ovl_create_real()

In the Linux kernel, the following vulnerability has been resolved: ovl: fix warning in ovlcreatereal Syzbot triggered the following warning in ovlworkdircreate - ovlcreatereal: if !err && WARNON!newdentry-dinode The reason is that the cgroup2 filesystem returns from mkdir without instantiating t...

CVE-2021-47579

Mode C: CVE-2021-47579 affects the Linux kernel overlayfs component (ovl) with a WARN_ON path in ovl_workdir_create() when mkdir returns a dentry without an inode (not instantiated). The fix, described in the connected advisories, calls ovl_mkdir_real() directly from ovl_workdir_create() and reje...

CVE-2021-47579: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ovl: fix warning in ovlcreatereal Syzbot triggered the following warning in ovlworkdircreate - ovlcreatereal: if !err && WARNON!newdentry-dinode The reason is that the cgroup2 filesystem returns from mkdir without instantiating t...