Out-of-bounds Read in Linux

CVE-2021-47620

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (23.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-47620: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Linux — versions 048acfa4daf167b007b6bd8bef474e90c2282a5f, 7d4238edd3bf8b8c75571cc3b382bc10438ac588, 185c77cbb53bc7481acc5a0b4e6119bbe393d561
  • Linux Kernel

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-47620?
CVE-2021-47620 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2024-06-20.
How severe is CVE-2021-47620?
High severity. CVSS v3 base score is 8.1 out of 10.