#VU13877 Denial of service in Red Hat Enterprise Linux for x86_64 - CVE-2018-10872

Vulnerability identifier: #VU13877

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10872

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a flaw in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, processor does not deliver interrupts and exceptions, they are delivered once the first instruction after the stack switch is executed. A remote attacker can crash the system kernel resulting in DoS.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for x86_64: 6

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External links
https://access.redhat.com/security/cve/cve-2018-10872

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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