High severity8.8NVD Advisory· Published Nov 24, 2020· Updated Jun 17, 2026

CVE-2020-29040

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Xen/Xen2 versions
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*range: <=4.14.0
- (no CPE)range: <=4.14.x
Xen/Xendescription
osv-coords
pkg:rpm/opensuse/xen&distro=openSUSE%20Tumbleweed
Range: < 4.15.1_01-1.2

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2021/01/19/4nvdMailing ListThird Party Advisory
xenbits.xen.org/xsa/advisory-355.htmlnvdVendor Advisory
xenbits.xen.org/xsa/advisory-355.htmlnvdVendor Advisory

News mentions

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