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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2022-03-03T22:04:15

Updated: 2024-08-03T17:01:07.744Z

Reserved: 2021-07-09T00:00:00

Link: CVE-2021-3640

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-03-03T23:15:08.197

Modified: 2023-11-07T03:38:10.750

Link: CVE-2021-3640

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-18T00:00:00Z

Links: CVE-2021-3640 - Bugzilla