Vulnerability identifier: #VU21516

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-18379

CWE-ID: CWE-125

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 perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the drivers/nvme/target/fc.c. A local user can run a specially crafted application on the system, trigger out-of-bounds read error and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 4.0 - 4.0.9, 4.1 - 4.1.52, 4.2 - 4.2.8, 4.3 - 4.3.6, 4.4 - 4.4.194, 4.5 - 4.5.7, 4.6 - 4.6.7, 4.7 - 4.7.10, 4.8 - 4.8.17, 4.9 - 4.9.194, 4.10 - 4.10.17, 4.11 - 4.11.12, 4.12 - 4.12.14, 4.13 - 4.13.16

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External links
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0c319d3a144d4b8f1ea2047fd614d2149b68f889
http://github.com/torvalds/linux/commit/0c319d3a144d4b8f1ea2047fd614d2149b68f889

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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.