vulnwire
8.4high

CVE-2017-2583

The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL s…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
8.4
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.6%
percentile 49%
Public exploits
0
none known

The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.

Exploit prediction (EPSS)

0.60% probability of exploitation in the next 30 days, higher than 49% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.08.4CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.04.6AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Technology feeds
Linux kernel (RSS, critical only)

References

  • bugzilla.redhat.com /show_bug.cgi?id=1414735 · x_refsource_CONFIRM, x_transferred
  • github.com /torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3 · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:1615 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • openwall.com /lists/oss-security/2017/01/19/2 · mailing-list, x_refsource_MLIST, x_transferred
  • usn.ubuntu.com /3754-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • securityfocus.com /bid/95673 · vdb-entry, x_refsource_BID, x_transferred
  • access.redhat.com /errata/RHSA-2017:1616 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-3791 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.9.5 · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.