What’s Vulnerable › Vulnerabilities

CVE-2022-42321

• Severity: medium (CVSS 6.5 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: 2022-11-01 · updated 2026-06-17
• Weakness: CWE-674

Description

Xenstore: Guests can crash xenstored via exhausting the stack Xenstored is using recursion for some Xenstore operations (e.g. for deleting a sub-tree of Xenstore nodes). With sufficiently deep nesting levels this can result in stack exhaustion on xenstored, leading to a crash of xenstored.

Affected products

• Debian Linux: 11.0
• Fedoraproject Fedora: 35, 36, 37
• xen: all versions

References

• http://www.openwall.com/lists/oss-security/2022/11/01/8
• http://xenbits.xen.org/xsa/advisory-418.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
• https://security.gentoo.org/glsa/202402-07
• https://www.debian.org/security/2022/dsa-5272
• https://xenbits.xenproject.org/xsa/advisory-418.txt
• http://www.openwall.com/lists/oss-security/2022/11/01/8
• http://xenbits.xen.org/xsa/advisory-418.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/

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