Log in Start free

Vulnerability · Published Jun 20, 2024 · Assigned by Linux

CVE-2021-47620Bluetooth: refactor malicious adv data check

High 8.1

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.3%top 74.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.16.7-1DEBIAN-CVE-2021-47620
Debian:13linux5.16.7-1DEBIAN-CVE-2021-47620
Debian:14linux5.16.7-1DEBIAN-CVE-2021-47620
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47620
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47620
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47620

Affected products (as reported)

VendorProductVersions
Linux Linux 048acfa4daf167b007b6bd8bef474e90c2282a5f – before 305e92f525450f3e1b5f5c9dc7eadb152d66a0827d4238edd3bf8b8c75571cc3b382bc10438ac588 – before 7889b38a7f21ed19314f83194622b195d328465c185c77cbb53bc7481acc5a0b4e6119bbe393d561 – before 5a539c08d743d9910631448da78af5e961664c0e4a1491432394b22e585a185ffca49086e4046aae – before 8819f93cd4a443dfe547aa622b21f723757df3fb24161b9c43de966789d5956428f45002d10f878e – before 835d3706852537bf92eb23eb8635b8dee0c0aa67ffc9019bd991707701273c2e5d8aed472229fc4d – before 83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba2de0e6a71ceb056e17e4684dce8b7640367996f9 – before bcea886771c3f22a590c8c8b9139a107bd7f1e1c640a476e38fce6c70c738ac09e5167e34f570303 – before 5c968affa804ba98c3c603f37ffea6fba618025e
Linux Linux 4.4.300 – before 4.4.3024.9.298 – before 4.9.3004.14.263 – before 4.14.2654.19.226 – before 4.19.2285.4.174 – before 5.4.1765.10.94 – before 5.10.965.15.17 – before 5.15.195.16.3 – before 5.16.5

References