What’s Vulnerable › Vulnerabilities

CVE-2019-17346

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-08 · updated 2026-06-17
• Weakness: CWE-20

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.

Affected products

• Debian Linux: 9.0, 10.0
• xen: through 4.11.2

References

• http://www.openwall.com/lists/oss-security/2019/10/25/5
• http://xenbits.xen.org/xsa/advisory-292.html
• https://seclists.org/bugtraq/2020/Jan/21
• https://www.debian.org/security/2020/dsa-4602
• https://xenbits.xen.org/xsa/advisory-292.html
• http://www.openwall.com/lists/oss-security/2019/10/25/5
• http://xenbits.xen.org/xsa/advisory-292.html
• https://seclists.org/bugtraq/2020/Jan/21
• https://www.debian.org/security/2020/dsa-4602
• https://xenbits.xen.org/xsa/advisory-292.html

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