Use-after-free error in Linux kernel - CVE-2016-7913

Vulnerability identifier: #VU12260

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2016-7913

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause DoS condition or gain elevated privileges on the target system.

The weakness exists in the xc2028_set_config function in drivers/media/tuners/tuner-xc2028.c due to use-after-free error. A local attacker can trigger memory corruption via vectors involving omission of the firmware name from a certain data structure, cause the service to crash or gain root privileges.

Linux kernel
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS

MRG Realtime
kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Virtualization Host

Update to version 4.6.

kernel (Red Hat package) - addressed in versions 3.10.0-693.47.2.el7, 3.10.0-862.el7
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.47.2.rt56.641.el6rt, 3.10.0-862.rt56.804.el7

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8dfbcc4351a0b6d2f2d77f...

• Denial of service in Linux Kernel
• Red Hat update for kernel
• Red Hat update for kernel-rt
• Red Hat Enterprise Linux 7.4 Extended Update Support update for kernel
• Red Hat Enterprise MRG 2 update for kernel-rt