CVE-2021-47620: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: before 4.4.302 (fixed in 4.4.302); from 4.5, before 4.9.300 (fixed in 4.9.300); from 4.10, before 4.14.265 (fixed in 4.14.265); from 4.15, before 4.19.228 (fixed in 4.19.228); from 4.20, before 5.4.176 (fixed in 5.4.176); from 5.5, before 5.10.96 (fixed in 5.10.96); …

Published 2024-06-20. Last modified 2026-08-04.