Vulnerabilities > CVE-2021-47620 - Out-of-bounds Read vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082
- https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c
- https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e
- https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb
- https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67
- https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba
- https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c
- https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025e
- https://git.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29a