Amazon Linux AMI 2: CVE-2021-47579: Security patch for kernel (Multiple Advisories)
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.
Solution(s)
- amazon-linux-ami-2-upgrade-bpftool
- amazon-linux-ami-2-upgrade-bpftool-debuginfo
- amazon-linux-ami-2-upgrade-kernel
- amazon-linux-ami-2-upgrade-kernel-debuginfo
- amazon-linux-ami-2-upgrade-kernel-debuginfo-common-aarch64
- amazon-linux-ami-2-upgrade-kernel-debuginfo-common-x86_64
- amazon-linux-ami-2-upgrade-kernel-devel
- amazon-linux-ami-2-upgrade-kernel-headers
- amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-93-87-444
- amazon-linux-ami-2-upgrade-kernel-tools
- amazon-linux-ami-2-upgrade-kernel-tools-debuginfo
- amazon-linux-ami-2-upgrade-kernel-tools-devel
- amazon-linux-ami-2-upgrade-perf
- amazon-linux-ami-2-upgrade-perf-debuginfo
- amazon-linux-ami-2-upgrade-python-perf
- amazon-linux-ami-2-upgrade-python-perf-debuginfo
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