#VU5832 Off-by-one error in Linux kernel - CVE-2017-2618

Vulnerability identifier: #VU5832

Vulnerability risk: Low

CVSSv4.0: 4.3 [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/E:U/U:Clear]

CVE-ID: CVE-2017-2618

CWE-ID: CWE-193

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to cause denial of service.

The vulnerability exists due to off-by-one error in setprocattr. A local process with the process:setfscreate permission can cause a kernel panic.

Successful exploitation of this vulnerability may lead to denial of service conditions.

Mitigation
Install patch from repository.

Vulnerable software versions

Linux kernel: 4.4.49, 4.9.10

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External links
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.49
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.10

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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.