#VU12260 Use-after-free error in Linux kernel - CVE-2016-7913

Vulnerability identifier: #VU12260

Vulnerability risk: Low

CVSSv4.0: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2016-7913

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description
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.

Mitigation
Update to version 4.6.

Vulnerable software versions

Linux kernel: 4.5.0 - 4.5.7

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

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.