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CVE Reference: CVE-2007-3731
NOTE: The text on this page is written by CVE MITRE and reflects neither the opinions of Secunia or the results of our research. All data on this page is written and maintained by CVE MITRE.

Original Page at CVE MITRE:
CVE-2007-3731

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.

CVE Status:
Candidate

References:

UBUNTU
  http://www.ubuntu.com/usn/usn-518-1

SAID
  Secunia Advisory: SA26935
  Secunia Advisory: SA26955
  Secunia Advisory: SA26978
  Secunia Advisory: SA27322
  Secunia Advisory: SA29159

REDHAT
  http://www.redhat.com/support/errata/RHSA-2007-0940.html

OVAL
  http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:10394

OSVDB
  37286

MISC
  http://bugzilla.kernel.org/show_bug.cgi?id=8765

DEBIAN
  http://www.debian.org/security/2007/dsa-1378

CONFIRM
  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a10d9a71bafd3a283da240d2868e71346d2aef6f
  http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0094
  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=29eb51101c02df517ca64ec472d7501127ad1da8

BUGTRAQ
  http://www.securityfocus.com/archive/1/archive/1/488972/100/0/threaded

BID
  25801


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