Security VulnerabilitiesNews

Linux Kernel rds_message_alloc_sgs() Function Heap Out-of-Bounds Write Vulnerability

Duncan 2338 Views 0 Comments ,  ,  1 min read

A vulnerability in the Linux Kernel could allow a local attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability is in the rds_message_alloc_sgs() function and is due to improper validation of DMA page allocation values by the affected software. An attacker could exploit this vulnerability to cause a heap-based out-of-bounds write, which could lead to a DoS condition on the system.

Kernel.org has confirmed the vulnerability and released a software patch.

CVE Number = CVE-2018-5332

Analysis
To exploit this vulnerability, the attacker must have local access to the targeted system. This access requirement may reduce the likelihood of a successful exploit.
Safeguards
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access local systems.
Administrators are advised to monitor affected systems.
Vendor Announcements
Kernel.org has released a git commit at the following link: RDS: Heap OOB write in rds_message_alloc_sgs()
Fixed Software
Kernel.org has released a software patch at the following link: kernel patch




Duncan

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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