CVE-2026-31781
Last modified
CVE-2026-31781 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl path The drm compat ioctl path takes a user controlled pointer, and then dereferences it into a table of function pointers, the signature method of spectre problems. Fix this up by calling array_index_nospec() on the index to the function pointer list.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl path The drm compat ioctl path takes a user controlled pointer, and then dereferences it into a table of function pointers, the signature method of spectre problems. Fix this up by calling array_index_nospec() on the index to the function pointer list.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 3.16.63, < 3.17 | — |
| Linux | Linux Kernel | >= 4.4.170, < 4.5 | — |
| Linux | Linux Kernel | >= 4.9.148, < 4.10 | — |
| Linux | Linux Kernel | >= 4.14.91, < 4.15 | — |
| Linux | Linux Kernel | >= 4.19.13, < 4.20 | — |
| Linux | Linux Kernel | >= 4.20.1, < 5.10.253 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.203 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.168 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.134 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.81 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.22 | — |
| Linux | Linux Kernel | >= 6.19, < 6.19.12 | — |
| Linux | Linux Kernel | 4.20 | — |
| Linux | Linux Kernel | 7.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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