Answer in brief
CVE-2026-31781 records a Unknown severity vulnerability in drm/ioc32: stop speculation on the drm_compat_ioctl path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=505b5240329b922f21f91d5b5d1e535c805eca6d <46a60ee8956ef1975f00455f614761c7ecedc09d || >=505b5240329b922f21f91d5b5d1e535c805eca6d <5bb398991f378ef74d90b14a6ea8b61ff96cc03a || >=505b5240329b922f21f91d5b5d1e535c805eca6d <d59c5d8539662d95887b4564f3f72ad38076a2d5 || >=505b5240329b922f21f91d5b5d1e535c805eca6d <489f2ef2b908898d01df697dc4fe1476674be640 || >=505b5240329b922f21f91d5b5d1e535c805eca6d <4a41c2b18fc05d30b718d2602cac339eae710b34 || >=505b5240329b922f21f91d5b5d1e535c805eca6d <f0e441be08a2eab10b2d06fccfa267ee599dd6b3 || >=505b5240329b922f21f91d5b5d1e535c805eca6d <27ef84bba9b9d7b03418c60fbc6069ea0e87b13c || >=505b5240329b922f21f91d5b5d1e535c805eca6d <f8995c2df519f382525ca4bc90553ad2ec611067 || abc60edcfc87771ff244763d4d19c67766f5dd0f || a2a840d6dcae960c2dfdf3fcb1b759e1b7d90663 || 00279b505289f7529d9be2e78915d0483ffbd314 || d04e6ea0cec9e7d6cba806508f657d2d0dc6cacf || 7f3ebea19795eb38438cd3709fabf2afd53cf447 || >=3.16.63 <3.17 || >=4.4.170 <4.5 || >=4.9.148 <4.10 || >=4.14.91 <4.15 || >=4.19.13 <4.20 | 46a60ee8956ef1975f00455f614761c7ecedc09d, 5bb398991f378ef74d90b14a6ea8b61ff96cc03a, d59c5d8539662d95887b4564f3f72ad38076a2d5, 489f2ef2b908898d01df697dc4fe1476674be640, 4a41c2b18fc05d30b718d2602cac339eae710b34, f0e441be08a2eab10b2d06fccfa267ee599dd6b3, 27ef84bba9b9d7b03418c60fbc6069ea0e87b13c, f8995c2df519f382525ca4bc90553ad2ec611067, 3.17, 4.5, 4.10, 4.15, 4.20 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
May 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 6, 2026
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.
Quoted source text, attributed separately from HOL analysis.