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Rewterz Threat Advisory – CVE 2019-12817 – Linux Kernel Local Privilege Escalation Vulnerability

Severity

Medium

Analysis Summary

arch/powerpc/mm/mmu_context_book3s64.c in the Linux kernel before 5.1.15 for powerpc has a bug where unrelated processes may be able to read/write to one another’s virtual memory under certain conditions via an mmap above 512 TB. Only a subset of powerpc systems are affected.

Impact

Privilege escalation

Affected Vendors

Linux

Affected Products

  • Redhat Enterprise Linux 8
  • Linux kernel 4.17.7
  • Linux kernel 4.17.3
  • Linux kernel 4.17.2
  • Linux kernel 4.17.1
  • Linux kernel 4.17.4
  • Linux kernel 4.17.11
  • Linux kernel 4.17.10
  • Linux kernel 4.17-rc2
  • Linux kernel 4.17

Remediation

Currently there are no patches available for this vulnerability.