#VU17253 Out-of-bounds write in Linux kernel - CVE-2018-16880
Published: January 29, 2019 / Updated: May 30, 2020
Vulnerability identifier: #VU17253
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2018-16880
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows an adjacent attacker to perform a denial of service (DoS) attack or execute arbitrary code.
The vulnerability exists due to out-of-bounds write in a kmalloc-8 slab on a virtual host when handling_rx() function in the [vhost_net] driver. An adjacent attacker can trigger a kernel memory corruption and cause a system panic or execute arbitrary code with elevated privileges.
Remediation
Install updates from vendor's website.
External links
- https://bugzilla.redhat.com/show_bug.cgi?id=1656472
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e2b3b35eb9896f26c98b9a...
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5a4941aa6d190e676065e...
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.7
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.20