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Managed SOC Vs Managed XDR — Part 1
April 8, 2022
Rewterz
Rewterz Threat Advisory – Multiple IBM Vulnerabilities
April 11, 2022

Rewterz Threat Advisory – Multiple Linux Kernel Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2022-1263 CVSS:5.1

Linux Kernel is vulnerable to a denial of service, caused by a NULL pointer dereference flaw in the kvm_dirty_ring_push function in virt/kvm/dirty_ring.c. By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause a denial of service condition.

CVE-2022-1158 CVSS:7

Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by an issue with allowing cmpxchg_gpte function to write to pfns outside the userspace region. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges or cause a denial of service condition.

Impact

  • Denial of Service
  • Privilege Escalation

Indicator Of Compromise

CVE

  • CVE-2022-1263
  • CVE-2022-1158

Affected Vendors

Linux

Affected Products

  • Linux Kernel 5.2
  • Linux Kernel 5.3
  • Linux Kernel 5.4
  • Linux Kernel 5.5
  • Linux Kernel

Remediation

Refer to Linux Kernel GIT Repository for patch, upgrade, or suggested workaround information.

CVE-2022-1263

CVE-2022-1158