[LU-9686] kernel update [RHEL7.3 3.10.0-514.21.2.el7]

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Bob Glossman (Inactive)

Description

Security Fix(es):

• A flaw was found in the way memory was being allocated on the stack for user
  space binaries. If heap (or different memory region) and stack memory regions
  were adjacent to each other, an attacker could use this flaw to jump over the
  stack guard gap, cause controlled memory corruption on process stack or the
  adjacent memory region, and thus increase their privileges on the system. This
  is a kernel-side mitigation which increases the stack guard gap size from one
  page to 1 MiB to make successful exploitation of this issue more difficult.
  (CVE-2017-1000364, Important)

Bugs fixed (https://bugzilla.redhat.com/):

1461333 - CVE-2017-1000364 kernel: heap/stack gap jumping via unbounded stack allocations

Issue Links

• is related to: LU-9717 kernel update [RHEL7.3 3.10.0-514.26.1.el7]
• is related to: LU-9561 kernel update [RHEL7.3 3.10.0-514.21.1.el7]