CVE-2021-3640
HIGH 7.0EPSS 0.4%
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.
- CVSS v3.1
- 7.0 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0
- 6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C - EPSS
- 0.37% chance of exploitation in the next 30 days, 30th percentile
- Published
- 2022-03-03
- Updated
- 2024-08-03