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Case File

CVE-2007-3731

MEDIUM · CVSS 4.9 EPSS 0.51%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2007-09-17 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.9. It affects Linux. It may lead to a denial-of-service condition.

CVE
CVE-2007-3731
Severity
MEDIUM
CVSS
4.9
EPSS
0.51%
Linux

Original NVD Description

The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function.