VYPR
High severity7.0NVD Advisory· Published Mar 3, 2022· Updated Jun 17, 2026

CVE-2021-3640

CVE-2021-3640

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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Affected products

318

Patches

Vulnerability mechanics

References

9

News mentions

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