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Oracle Linux: (CVE-2017-12190) (Multiple Advisories): kernel security and bug fix update

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Oracle Linux: (CVE-2017-12190) (Multiple Advisories): kernel security and bug fix update

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
11/18/2017
Created
07/25/2018
Added
12/08/2017
Modified
01/22/2020

Description

The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.

Solution(s)

  • oracle-linux-upgrade-dtrace-modules
  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-abi-whitelists
  • oracle-linux-upgrade-kernel-debug
  • oracle-linux-upgrade-kernel-debug-devel
  • oracle-linux-upgrade-kernel-devel
  • oracle-linux-upgrade-kernel-doc
  • oracle-linux-upgrade-kernel-headers
  • oracle-linux-upgrade-kernel-tools
  • oracle-linux-upgrade-kernel-tools-libs
  • oracle-linux-upgrade-kernel-tools-libs-devel
  • oracle-linux-upgrade-kernel-uek
  • oracle-linux-upgrade-kernel-uek-debug
  • oracle-linux-upgrade-kernel-uek-debug-devel
  • oracle-linux-upgrade-kernel-uek-devel
  • oracle-linux-upgrade-kernel-uek-doc
  • oracle-linux-upgrade-kernel-uek-firmware
  • oracle-linux-upgrade-perf
  • oracle-linux-upgrade-python-perf

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