AZL-6537

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AZL-6537

Summary: CVE-2021-28691 affecting package kernel for versions less than 5.10.78.1-1

Details: 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2021-28691