CVE-2021-3609

HIGH7.0

.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

Published Mar 3, 2022

Modified 1 years ago

No fix available

Details

.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

WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=1971651 WEBhttps://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md WEBhttps://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463 WEBhttps://security.netapp.com/advisory/ntap-20220419-0004/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2021-3609 WEBhttps://www.openwall.com/lists/oss-security/2021/06/19/1

CVSS Analysis

CVSS v3.1

7.0

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Weakness Type (CWE)

Concurrency

CWE-362

Race Condition

Ecosystems

Timeline

PublishedMar 3, 2022

ModifiedAug 3, 2024