Vulnerability Description
The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.
CVSS Score
7.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Related Weaknesses (CWE)
References
- https://xenbits.xenproject.org/xsa/advisory-505.html
- http://www.openwall.com/lists/oss-security/2026/07/28/21
- http://xenbits.xen.org/xsa/advisory-505.html
FAQ
What is CVE-2026-62432?
CVE-2026-62432 is a vulnerability with a CVSS score of 7.3 (HIGH). The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointe...
How severe is CVE-2026-62432?
CVE-2026-62432 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-62432?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.