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CentOS Linux: CVE-2021-3640: Moderate: kernel-rt security and bug fix update (Multiple Advisories)

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CentOS Linux: CVE-2021-3640: Moderate: kernel-rt security and bug fix update (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
03/03/2022
Created
11/10/2022
Added
11/09/2022
Modified
05/25/2023

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.

Solution(s)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt

References

  • DSA-5096
  • CVE-2021-3640

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