CVE-2021-3609

high

Description

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1971651

https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463

https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md

https://www.openwall.com/lists/oss-security/2021/06/19/1

https://security.netapp.com/advisory/ntap-20220419-0004/

Details

Source: MITRE

Published: 2022-03-03

Updated: 2022-04-19

Type: CWE-362

Risk Information

CVSS v2

Base Score: 6.9

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH