Out-of-bounds read in Linux kernel - CVE-2017-16645

Vulnerability identifier: #VU9761

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-16645

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to an error in the ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel. A local attacker can supply a specially crafted USB device, trigger ims_pcu_parse_cdc_data out-of-bounds read and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

Linux kernel
Amazon Linux AMI
SUSE Linux
Fedora
kernel

Update to version 4.13.11.

kernel - addressed in versions 4.13.16-100.fc25, 4.13.16-200.fc26, 4.13.16-300.fc27

• https://groups.google.com/forum/#!msg/syzkaller/q6jjr1OhqO8/WcA99AVFBAAJ

• Amazon Linux AMI update for kernel
• SUSE Linux update for the Linux Kernel
• SUSE Linux update for the Linux Kernel
• OpenSUSE Linux update for the Linux Kernel
• OpenSUSE Linux update for the Linux Kernel
• SUSE Linux update for the Linux Kernel
• Fedora 27 update for kernel
• Fedora 26 update for kernel
• Fedora 25 update for kernel