CVEvulnerability

CVE-2007-3731

4.9 MEDIUM Published 2007-09-17 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2007-09-17
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-20

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.

Affected configurations

• linux linux kernel 2.6.20 • linux linux kernel 2.6.21

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References