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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < fb1de260033c215dba438973d82b48562bdc86bb; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < e9e64dd02fd68776afda00777591eca0c3984285; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < 33a44333a9dfda044b0e233399b12ead7f8a90ae; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < d331c63570af61ef7aaf516b64a8d6f47518a3a4; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < a83fcddf3c75d004f12aa13555bb73da19fb75a9; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < 4f6bd79bb7e55095f09bec9b4eb6c09df1306116; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077; >= c1a752ba2d6b8a52879c7ab637cff38359ea9827, < 6645856f0df3aeecd45519cb611415b4b89c2223 |
| Linux | Linux | 4.3 |
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
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received