CVE-2026-90334tty: clear cdev pointer after cdev_add() failure
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before fb1de260033c215dba438973d82b48562bdc86bb; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before e9e64dd02fd68776afda00777591eca0c3984285; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before 33a44333a9dfda044b0e233399b12ead7f8a90ae; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before d331c63570af61ef7aaf516b64a8d6f47518a3a4; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before a83fcddf3c75d004f12aa13555bb73da19fb75a9; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before 4f6bd79bb7e55095f09bec9b4eb6c09df1306116; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077; from c1a752ba2d6b8a52879c7ab637cff38359ea9827 before 6645856f0df3aeecd45519cb611415b4b89c2223 | CNA record |
References
- https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb
- https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285
- https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae
- https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4
- https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9
- https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116
- https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077
- https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.