CVE-2021-28691

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.

Score
CVSS 3.1 7.8 High
Status
Analyzed - security@xen.org
Published
2021-06-29
Last modified
2024-08-03
Weaknesses
CWE-416

Affected products

References

 
 
© AVABIS GmbH privacypolicy about