A vulnerability in the vhost/vhost.c:vhost_new_msg() function of the Linux Kernel could allow a local attacker to access sensitive information on a targeted system.
The vulnerability is due to improper initialization of memory in messages that are passed between virtual guests and the host operating system by the affected software. An attacker could exploit this vulnerability by reading from the /dev/vhost-net device file on a targeted system. An exploit could allow the attacker to read sensitive kernel memory information on the system, which could be used to conduct further attacks.
Kernel.org has confirmed the vulnerability; however, software updates are not available.
To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.