Answer in brief
CVE-2026-89823 records a High severity (CVSS 7.8) 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.
CVSS is 7.8. 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
Oct 19, 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.