CVE-2026-90334
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae
- https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116
- https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077
- https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223
- https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9
- https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4
- https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285
- https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.