Denial of service in Linux kernel - CVE-2019-3701
Published: January 4, 2019 / Updated: May 30, 2020
Vulnerability identifier: #VU16810
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-3701
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in can_can_gw_rcv in net/can/gw.c due to missing check. A local attacker can write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames, trigger general protection fault and cause the system to crash.
The weakness exists in can_can_gw_rcv in net/can/gw.c due to missing check. A local attacker can write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames, trigger general protection fault and cause the system to crash.
How to mitigate CVE-2019-3701
Install updates from vendor's website.
Sources
- https://bugzilla.suse.com/show_bug.cgi?id=1120386
- https://marc.info/?l=linux-netdev&m=154651842302479&w=2
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.172
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.152
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.95
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.4
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.17