SB2017030215 - Red Hat Enterprise Linux 7 update for kernel-rt 

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Main Vulnerability Database SB2017030215

SB2017030215 - Red Hat Enterprise Linux 7 update for kernel-rt

Published: March 2, 2017 Updated: April 24, 2025

Security Bulletin ID SB2017030215
Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2016-8630)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the x86_decode_insn function in arch/x86/kvm/emulate.c due to NULL pointer dereference when KVM is enabled. A local attacker can cause the service to crash via a certain use of a ModR/M byte in an undefined instruction.

2) Use-after-free (CVE-ID: CVE-2016-8655)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to a use-after-free error within the packet_setsockopt() and packet_set_ring() functions in net/packet/af_packet.c. A local user can execute arbitrary code.


3) Integer overflow (CVE-ID: CVE-2016-9083)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer overflow within the vfio_msi_enable() function in drivers/vfio/pci/vfio_pci_intrs.c, within the vfio_pci_ioctl() function in drivers/vfio/pci/vfio_pci.c. A local user can execute arbitrary code.


4) Integer overflow (CVE-ID: CVE-2016-9084)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer overflow within the vfio_msi_enable() function in drivers/vfio/pci/vfio_pci_intrs.c, within the vfio_pci_ioctl() function in drivers/vfio/pci/vfio_pci.c. A local user can execute arbitrary code.


Remediation

Install update from vendor's website.

References