vulnwire
4.9med

CVE-2007-3731

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-ste…

Published 19 y ago · modified 4 mo ago · JSON

CVSS
4.9
v2.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.5%
percentile 44%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.51% probability of exploitation in the next 30 days, higher than 44% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD2.04.9AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds
Linux kernel (RSS, critical only)

References

  • securityfocus.com /bid/25801 · vdb-entry, x_refsource_BID, x_transferred
  • bugzilla.kernel.org /show_bug.cgi?id=8765 · x_refsource_MISC, x_transferred
  • git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=a10d9a71bafd3a283da240d2868 · x_refsource_CONFIRM, x_transferred
  • osvdb.org /37286 · vdb-entry, x_refsource_OSVDB, x_transferred
  • redhat.com /support/errata/RHSA-2007-0940.html · vendor-advisory, x_refsource_REDHAT, x_transferred
  • secunia.com /advisories/29159 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=29eb51101c02df517ca64ec472d · x_refsource_CONFIRM, x_transferred
  • secunia.com /advisories/27322 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • wiki.rpath.com /wiki/Advisories:rPSA-2008-0094 · x_refsource_CONFIRM, x_transferred
  • secunia.com /advisories/26978 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • securityfocus.com /archive/1/488972/100/0/threaded · mailing-list, x_refsource_BUGTRAQ, x_transferred
  • issues.rpath.com /browse/RPL-2304 · x_refsource_CONFIRM, x_transferred
  • ubuntu.com /usn/usn-518-1 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • secunia.com /advisories/26955 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10394 · vdb-entry, signature, x_refsource_OVAL, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=248324 · x_refsource_CONFIRM, x_transferred
  • secunia.com /advisories/26935 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • debian.org /security/2007/dsa-1378 · vendor-advisory, x_refsource_DEBIAN, x_transferred

Sources

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