Updated: 2025-06-19 03:49:13.244643
Description:
In the Linux kernel, the following vulnerability has been resolved: riscv: prevent pt_regs corruption for secondary idle threads Top of the kernel thread stack should be reserved for pt_regs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with their pt_regs, so both may get corrupted. Similar issue has been fixed for the primary hart, see c7cdd96eca28 ("riscv: prevent stack corruption by reserving task_pt_regs(p) early"). However that fix was not propagated to the secondary harts. The problem has been noticed in some CPU hotplug tests with V enabled. The function smp_callin stored several registers on stack, corrupting top of pt_regs structure including status field. As a result, kernel attempted to save or restore inexistent V context.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | HIGH | 7.8 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.8 | HIGH | Not Vulnerable | 2025-06-03 00:35:04 | ||
| CentOS 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:27 | ||
| CentOS 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:26 | ||
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:26 | ||
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:27 | ||
| CentOS Stream 8 ELS | kernel | 4.18.0 | 7.8 | HIGH | Not Vulnerable | 2024-06-29 11:21:13 | ||
| CloudLinux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:27 | ||
| CloudLinux 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Ignored | 2025-01-10 22:43:51 | ||
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-07-03 14:21:26 | ||
| Oracle Linux 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Not Vulnerable | 2025-05-12 04:25:08 |