Vulnerability Description
An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.14.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/01/19/4Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- https://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/4Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
- https://xenbits.xen.org/xsa/advisory-355.htmlVendor Advisory
FAQ
What is CVE-2020-29040?
CVE-2020-29040 is a vulnerability with a CVSS score of 8.8 (HIGH). An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one e...
How severe is CVE-2020-29040?
CVE-2020-29040 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-29040?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen.