Denial of service in Linux kernel - CVE-2019-3701

Vulnerability identifier: #VU16810

CSH Severity: Low

CVSS v4: 6.9 [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]

CVE-ID: CVE-2019-3701

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

Linux kernel
Fedora
kernel
kernel-headers
kernel-tools

Install updates from vendor's website.

Linux kernel - addressed in versions 4.4.172, 4.9.152, 4.14.95, 4.19.17, 4.20.4
kernel - addressed in versions 4.19.14-200.fc28, 4.19.14-300.fc29
kernel-headers - addressed in versions 4.19.14-200.fc28, 4.19.14-300.fc29
kernel-tools - addressed in versions 4.19.14-200.fc28, 4.19.14-300.fc29

• 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

• Denial of service in Linux Kernel
• Fedora 28 update for kernel, kernel-headers, kernel-tools
• Fedora 29 update for kernel, kernel-headers, kernel-tools