Improper Input Validation Affecting torvalds/linux package, versions [4.4.300,4.4.302)[4.9.298,4.9.300)[4.14.263,4.14.265)[4.19.226,4.19.228)[5.4.174,5.4.176)[5.10.94,5.10.96)[5.15.17,5.15.19)[5.16.3,5.16.5)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Improper Input Validation vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20571724
- published8 Oct 2026
- disclosed20 Jun 2024
- creditUnknown
Introduced: 20 Jun 2024
CVE-2021-47620 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5 or higher.
Overview
Affected versions of this package are vulnerable to Improper Input Validation via the hci_le_adv_report_evt process. An attacker can cause an out-of-bounds read and potentially disclose sensitive memory or crash the system by sending crafted Bluetooth Low Energy advertising reports to a device within radio range.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst