CVSS 3.1
7.0 highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-3609
High (7.0). EPSS 0.4% chance of exploitation in the next 30 days.
.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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
- CWE
- CWE-362
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
- netapp:h300e_firmware
- netapp:h300s_firmware
- netapp:h410c_firmware
- netapp:h410s_firmware
- netapp:h500e_firmware
- netapp:h500s_firmware
- netapp:h610c_firmware
- netapp:h610s_firmware
- netapp:h615c_firmware
- netapp:h700e_firmware
- netapp:h700s_firmware
- redhat:3scale_api_management
- redhat:build_of_quarkus
- redhat:codeready_linux_builder_eus
- redhat:codeready_linux_builder_for_power_little_endian_eus
- redhat:enterprise_linux_aus
- redhat:enterprise_linux_eus
- redhat:enterprise_linux_for_ibm_z_systems_eus
- redhat:enterprise_linux_for_ibm_z_systems_eus_s390x
- redhat:enterprise_linux_for_power_little_endian_eus
- redhat:enterprise_linux_for_real_time
- redhat:enterprise_linux_for_real_time_for_nfv
- redhat:enterprise_linux_for_real_time_for_nfv_tus
- redhat:enterprise_linux_for_real_time_tus
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
- redhat:enterprise_linux_server_tus
- redhat:enterprise_linux_server_update_services_for_sap_solutions
- redhat:openshift_container_platform
- redhat:virtualization
- redhat:virtualization_host
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1971651
- https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md
- https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463
- https://security.netapp.com/advisory/ntap-20220419-0004/
- https://www.openwall.com/lists/oss-security/2021/06/19/1