Vulnerability in Linux Kernel
CVE-2018-10901
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
EPSS: 0.005 (41.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- [Unknown] Kernel: — versions n/a
- Redhat Enterprise_linux_desktop — versions 6.0
- Redhat Enterprise_linux_server — versions 6.0
- Redhat Enterprise_linux_server_aus — versions 6.4, 6.5, 6.6
- Redhat Enterprise_linux_workstation — versions 6.0
Weakness classification (CWE)
References
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-10901?
- CVE-2018-10901 is a high-severity vulnerability in Linux Kernel, classified under Improper Initialization. CVSS score: 7.8/10. Published 2018-07-26.
- How severe is CVE-2018-10901?
- High severity. CVSS v3 base score is 7.8 out of 10.