CVE-2019-17346 — Improper Input Validation in XEN

CWE-20 — Improper Input ValidationCWE-400 — Uncontrolled Resource Consumption6 documents6 sources
Severity
8.8HIGHNVD
EPSS
0.2%
top 60.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENDebian XENDebian Linux
Timeline
PublishedOct 8
Latest updateMay 24

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 2.0 | Impact: 6.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.11.1+92-g6c33308a8d-1 (bookworm)
▶Debianxen/xen< 4.11.1+92-g6c33308a8d-1+3
▶NVDxen/xen4.11.2

Also affects: Debian Linux 10.0, 9.0

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-j897-36j5-vg2q: An issue was discovered in Xen through 4↗2022-05-24
▶
OSV
CVE-2019-17346: An issue was discovered in Xen through 4↗2019-10-08
▶

📋Vendor Advisories

2
Red Hat
xen: xsa292: insufficient TLB flushing when using PCID↗2019-03-05
▶
Debian
CVE-2019-17346: xen - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to ...↗2019
▶

💬Community

1
Bugzilla
CVE-2019-17346 xen: xsa292: insufficient TLB flushing when using PCID↗2019-02-20
▶