Answer in brief
CVE-2026-89823 records a Unknown severity vulnerability in drm: fix race between partial drm_dev_register() failure and ioctl. 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 | >=bee330f3d67273a68dcb99f59480d59553c008b2 <26d9162213952927cd59c0d94b7e0e992b347bec || >=bee330f3d67273a68dcb99f59480d59553c008b2 <24d28d15c0f7f7d4a1c229f8730314f0f8758810 || >=bee330f3d67273a68dcb99f59480d59553c008b2 <6729990df9e70623bf53f855b521ae71ca9cb278 || >=bee330f3d67273a68dcb99f59480d59553c008b2 <a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c || >=bee330f3d67273a68dcb99f59480d59553c008b2 <19dbfe4d586aecfed121cb3fa62281761d9d341f || >=bee330f3d67273a68dcb99f59480d59553c008b2 <79d09cfe90304ff4f195e47d569800f5e0f8b854 || >=bee330f3d67273a68dcb99f59480d59553c008b2 <2d1215a72159d00001e08dee162e27718934bee9 || >=bee330f3d67273a68dcb99f59480d59553c008b2 <eb197f7d60f00d0f5b1b3505dfc86a7e36045a3e | 26d9162213952927cd59c0d94b7e0e992b347bec, 24d28d15c0f7f7d4a1c229f8730314f0f8758810, 6729990df9e70623bf53f855b521ae71ca9cb278, a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c, 19dbfe4d586aecfed121cb3fa62281761d9d341f, 79d09cfe90304ff4f195e47d569800f5e0f8b854, 2d1215a72159d00001e08dee162e27718934bee9, eb197f7d60f00d0f5b1b3505dfc86a7e36045a3e |
| Linux/Linuxgeneric | 4.18 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: drm: fix race between partial drm_dev_register() failure and ioctl If drm_dev_register() fails after registering a minor (e.g. render minor registered, primary minor fails), userspace could have opened the first minor and entered a drm_dev_enter() critical section. Since the unplugged flag was never set, the ioctl proceeds while the error path tears down device resources. Fix this by introducing drm_dev_synchronize_unplug(), which sets the unplugged flag and waits for the SRCU barrier, ensuring all in-flight drm_dev_enter() critical sections complete before cleanup proceeds; call it on the error path of drm_dev_register().
Quoted source text, attributed separately from HOL analysis.