SB2019062526 - Buffer overflow in Linux kernel
Published: June 25, 2019 Updated: June 1, 2020
Security Bulletin ID
SB2019062526
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2019-12817)
The vulnerability allows a local authenticated user to execute arbitrary code.
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.
Remediation
Install update from vendor's website.