Updated: 2026-02-27 00:12:52.831809
Description:
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 4.7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 4.7 | MEDIUM | Ignored | 2025-09-23 09:43:25 | Exposure is limited to ARM64 hosts using the GICv4/v4.1 interrupt controller with KVM’s VPE/doorbe... | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-03-21 03:34:10 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-03-21 03:34:10 | Ignored due to low severity | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2025-02-26 07:16:30 | Ignored due to low severity |