Updated: 2026-02-08 04:40:17.33544
Description:
In the Linux kernel, the following vulnerability has been resolved: comedi: aio_iiro_16: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & 0xdcfc) { 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 |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.1 | HIGH | Not Vulnerable | 2026-01-12 17:45:36 | ||
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.1 | HIGH | Not Vulnerable | 2026-01-27 15:01:18 | ||
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.1 | HIGH | Not Vulnerable | 2026-01-27 15:01:19 | ||
| CentOS Stream 8 ELS | kernel | 4.18.0 | 7.1 | HIGH | Released | CLSA-2026:1770032032 | 2026-02-02 15:05:08 | |
| Oracle Linux 7 ELS | kernel-uek | 5.4.17 | 7.1 | HIGH | Released | CLSA-2025:1764085382 | 2025-11-25 20:35:14 | |
| TuxCare 9.6 ESU | kernel | 5.14.0 | 7.1 | HIGH | Not Vulnerable | 2026-01-12 17:45:37 | ||
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:32:39 | ||
| Ubuntu 16.04 ELS | linux | 4.4.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:45:33 | ||
| Ubuntu 18.04 ELS | linux | 4.15.0 | 7.1 | HIGH | Needs Triage | 2026-01-08 06:45:31 | ||
| Ubuntu 20.04 ELS | linux | 5.4.0 | 7.1 | HIGH | In Testing | 2026-02-05 13:17:48 |