CVE-2018-7540
UnknownEPSS 0.44%
Last modified
CVE-2018-7540 is a vulnerability of currently unknown severity. An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.
Description
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.10.0 |
| Debian | Debian Linux | 9.0 |
References
- https://lists.debian.org/debian-lts-announce/2018/03/msg00003.htmlThird Party Advisory
- https://www.debian.org/security/2018/dsa-4131Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-252.htmlVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00003.htmlThird Party Advisory
- https://www.debian.org/security/2018/dsa-4131Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-252.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7540?
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.
How severe is CVE-2018-7540?
Severity scoring for CVE-2018-7540 is pending analysis. The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7540?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2018-7540?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST