Vulnerability CVE-2021-47573
Published: 2024-06-19

Description:
In the Linux kernel, the following vulnerability has been resolved:

xen/blkfront: harden blkfront against event channel storms

The Xen blkfront driver is still vulnerable for an attack via excessive
number of events sent by the backend. Fix that by using lateeoi event
channels.

This is part of XSA-391

 References:
https://git.kernel.org/stable/c/3e04b9e6aa7d77287e70a400be83060d2b7b2cfe
https://git.kernel.org/stable/c/25898389795bd85d8e1520c0c75c3ad906c17da7
https://git.kernel.org/stable/c/5ac3b68b79c9e964dd6f3cf80ff825518e502b79
https://git.kernel.org/stable/c/269d7124bcfad2558d2329d0fe603ca20b20d3f4
https://git.kernel.org/stable/c/4ed9f5c511ce95cb8db05ff82026ea901f45fd76
https://git.kernel.org/stable/c/8ac3b6ee7c9ff2df7c99624bb1235e2e55623825
https://git.kernel.org/stable/c/caf9b51829a50590b84daea924a0fd62d32bc952
https://git.kernel.org/stable/c/0fd08a34e8e3b67ec9bd8287ac0facf8374b844a
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