Amazon Linux AMI 2: CVE-2021-28691: Security patch for kernel (ALASKERNEL-5.10-2022-002)
Description
Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
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-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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