Answer in brief
CVE-2026-90334 records a Unknown severity vulnerability in tty: clear cdev pointer after cdev_add() failure. 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 | >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <fb1de260033c215dba438973d82b48562bdc86bb || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <e9e64dd02fd68776afda00777591eca0c3984285 || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <33a44333a9dfda044b0e233399b12ead7f8a90ae || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <d331c63570af61ef7aaf516b64a8d6f47518a3a4 || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <a83fcddf3c75d004f12aa13555bb73da19fb75a9 || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <4f6bd79bb7e55095f09bec9b4eb6c09df1306116 || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <5c5a795bf6248fe96f96dd9fd79d66bbb4a92077 || >=c1a752ba2d6b8a52879c7ab637cff38359ea9827 <6645856f0df3aeecd45519cb611415b4b89c2223 | fb1de260033c215dba438973d82b48562bdc86bb, e9e64dd02fd68776afda00777591eca0c3984285, 33a44333a9dfda044b0e233399b12ead7f8a90ae, d331c63570af61ef7aaf516b64a8d6f47518a3a4, a83fcddf3c75d004f12aa13555bb73da19fb75a9, 4f6bd79bb7e55095f09bec9b4eb6c09df1306116, 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077, 6645856f0df3aeecd45519cb611415b4b89c2223 |
| Linux/Linuxgeneric | 4.3 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: tty: clear cdev pointer after cdev_add() failure tty_cdev_add() drops the cdev reference when cdev_add() fails, but leaves driver->cdevs[index] pointing to freed memory. tty_unregister_device() later passes that stale pointer to cdev_del(), causing a use-after-free. Clear the slot after dropping the reference.
Quoted source text, attributed separately from HOL analysis.