Vulnerability identifier: #VU7251

Vulnerability risk: Low

CVSSv3.1: 6.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-9940

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 gain elevated privileges on the target system.

The weakness exists due to use-after-free error in the regulator_ena_gpio_free function in drivers/regulator/core.c. A local attacker can run a specially crafted application, trigger memory corruption, gain kernel privileges and cause the system to crash.

Successful exploitation of the vulnerability results may result in denial of service.

Mitigation
Update to version 3.19.

Vulnerable software versions

Linux kernel: 3.16.7-ckt25-2 - 3.16.43-2+deb8u2, 3.2 - 3.2.89-2, 3.8, 3.9, 3.5.1 - 3.5.5, 3.4 - 3.4.32, 3.3 - 3.3.8, 3.1 - 3.1.10, 3.0 - 3.0.68, 2.6.13.1 - 2.6.33.7, 3.18, 3.14.72

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=60a2362f769cf549dc4661...

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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.