CVE-2021-3609
HIGHCVSS 7/10EPSS 0.43%
Last modified
CVE-2021-3609 is a high-severity vulnerability rated 7/10 on the CVSS scale. .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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.25, < 4.4.276 |
| Linux | Linux Kernel | >= 4.5, < 4.9.276 |
| Linux | Linux Kernel | >= 4.10, < 4.14.240 |
| Linux | Linux Kernel | >= 4.15, < 4.19.198 |
| Linux | Linux Kernel | >= 4.20, < 5.4.132 |
| Linux | Linux Kernel | >= 5.5.0, < 5.10.50 |
| Linux | Linux Kernel | >= 5.11, < 5.12.17 |
| Linux | Linux Kernel | >= 5.13, < 5.13.2 |
| Redhat | 3scale Api Management | 2.0 |
| Redhat | Build Of Quarkus | 1.0 |
| Redhat | Codeready Linux Builder Eus | 8.1 |
| Redhat | Codeready Linux Builder Eus | 8.2 |
| Redhat | Codeready Linux Builder Eus | 8.4 |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 8.1 |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 8.2 |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 8.4 |
| Redhat | Openshift Container Platform | 4.6 |
| Redhat | Openshift Container Platform | 4.7 |
| Redhat | Openshift Container Platform | 4.8 |
| Redhat | Virtualization | 4.0 |
| Redhat | Virtualization Host | 4.0 |
| Redhat | Enterprise Linux Aus | 8.2 |
| Redhat | Enterprise Linux Eus | 8.1 |
| Redhat | Enterprise Linux Eus | 8.2 |
| Redhat | Enterprise Linux Eus | 8.4 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.4 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus S390x | 8.1 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.1 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.2 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.4 |
| Redhat | Enterprise Linux For Real Time | 8.0 |
| Redhat | Enterprise Linux For Real Time For Nfv | 8.0 |
| Redhat | Enterprise Linux For Real Time For Nfv Tus | 8.0 |
| Redhat | Enterprise Linux For Real Time For Nfv Tus | 8.2 |
| Redhat | Enterprise Linux For Real Time Tus | 8.0 |
| Redhat | Enterprise Linux For Real Time Tus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.4 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.1 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.2 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.4 |
| Redhat | Enterprise Linux Server Tus | 8.2 |
| Redhat | Enterprise Linux Server Tus | 8.4 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.1 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.2 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.4 |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
Showing 50 of 57 affected configurations. See NVD for the full list.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1971651Issue Tracking, Third Party Advisory
- https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.mdExploit, Technical Description, Third Party Advisory
- https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220419-0004/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/06/19/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1971651Issue Tracking, Third Party Advisory
- https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.mdExploit, Technical Description, Third Party Advisory
- https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220419-0004/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/06/19/1Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3609?
.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.
How severe is CVE-2021-3609?
CVE-2021-3609 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3609?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-3609?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST