What’s Vulnerable › Vulnerabilities

CVE-2019-17351

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% 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-770

Description

An issue was discovered in drivers/xen/balloon.c in the Linux kernel before 5.2.3, as used in Xen through 4.12.x, allowing guest OS users to cause a denial of service because of unrestricted resource consumption during the mapping of guest memory, aka CID-6ef36ab967c7.

Affected products

• Linux kernel: before 5.2.3 — fixed in 5.2.3
• xen: through 4.12.1

How to fix

Upgrade to a fixed version: Linux kernel 5.2.3. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2019/10/25/9
• http://xenbits.xen.org/xsa/advisory-300.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
• https://github.com/torvalds/linux/commit/6ef36ab967c71690ebe7e5ef997a8be4da3bc844
• https://security.netapp.com/advisory/ntap-20191031-0005/
• https://usn.ubuntu.com/4286-1/
• https://usn.ubuntu.com/4286-2/
• https://xenbits.xen.org/xsa/advisory-300.html
• http://www.openwall.com/lists/oss-security/2019/10/25/9
• http://xenbits.xen.org/xsa/advisory-300.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
• https://github.com/torvalds/linux/commit/6ef36ab967c71690ebe7e5ef997a8be4da3bc844

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