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Case File

CVE-2019-10638

MEDIUM · CVSS 6.5 EPSS 2.57% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-07-05 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. It affects Linux. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2019-10638
Severity
MEDIUM
CVSS
6.5
EPSS
2.57%
Linux

Original NVD Description

In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

Related CVEs

Other vulnerabilities affecting the same vendor(s)