Security Advisory

CVE-2021-3640

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2022-03-03 22:04:15

Last updated 2024-08-03 17:01:07

Assigner redhat

State PUBLISHED

Description

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

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