Updated: 2026-02-08 04:36:57.927113
Description:
In the Linux kernel, the following vulnerability has been resolved: comedi: pcl812: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & board->irq_bits) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | HIGH | 7.1 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| RHEL 7 ELS | kernel | 3.10.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 07:33:42 | ||
| TuxCare 9.6 ESU | kernel | 5.14.0 | 7.1 | HIGH | Not Vulnerable | 2026-01-12 17:45:34 | ||
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:32:41 | ||
| Ubuntu 16.04 ELS | linux | 4.4.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:45:41 | ||
| Ubuntu 18.04 ELS | linux | 4.15.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:45:40 | ||
| Ubuntu 20.04 ELS | linux | 5.4.0 | 7.1 | HIGH | In Testing | 2026-02-05 13:17:47 |