CVSS 3.0
7.8 highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2016-3157
High (7.8). EPSS 0.5% chance of exploitation in the next 30 days.
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWE
- CWE-264
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- xen:xen