CVE-2007-3731

MediumCVSS 4.9/10Last modified Jun 16, 2026

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.

Metrics

CVSS 2.0 4.9/10AV:L/AC:L/Au:N/C:N/I:N/A:C

Weakness enumeration

CWE-20

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
Sep 17, 2007
Last modified
Jun 16, 2026
NVD status
Modified

Related CVEs from 2007

CVE-2007-37325.5In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. TCVE-2007-37349.3Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 2.0.0.5 and Thunderbird before 2.0.0.5 allow remote attCVE-2007-37359.3Multiple unspecified vulnerabilities in the JavaScript engine in Mozilla Firefox before 2.0.0.5 and Thunderbird before 2.0.0.5 allow remote CVE-2007-37364.3Cross-site scripting (XSS) vulnerability in Mozilla Firefox before 2.0.0.5 allows remote attackers to inject arbitrary web script "into anotCVE-2007-37379.3Mozilla Firefox before 2.0.0.5 allows remote attackers to execute arbitrary code with chrome privileges by calling an event handler from an CVE-2007-37389.3Multiple unspecified vulnerabilities in Mozilla Firefox before 2.0.0.5 allow remote attackers to execute arbitrary code via a crafted XPCNatCVE-2007-37394.7mm/mmap.c in the hugetlb kernel, when run on PowerPC systems, does not prevent stack expansion from entering into reserved kernel page memorCVE-2007-37404.4The CIFS filesystem in the Linux kernel before 2.6.22, when Unix extension support is enabled, does not honor the umask of a process, which CVE-2007-37414.3The (1) psp (aka .tub), (2) bmp, (3) pcx, and (4) psd plugins in gimp allow user-assisted remote attackers to cause a denial of service (craCVE-2007-37424.3WebKit in Apple Safari 3 Beta before Update 3.0.3, and iPhone before 1.0.1, does not properly handle the interaction between International DCVE-2007-37436.8Stack-based buffer overflow in bookmark handling in Apple Safari 3 Beta before Update 3.0.3 on Windows allows user-assisted remote attackersCVE-2007-37445.8Heap-based buffer overflow in the UPnP IGD (Internet Gateway Device Standardized Device Control Protocol) implementation in mDNSResponder on
CVE-2007-3731: Medium severity, CVSS 4.9 | Vulnix