Not yet scoredPublished Sep 17, 2026

CVE-2026-90334tty: clear cdev pointer after cdev_add() failure

Updated under an hour ago (Oct 27, 2026, 1:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

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

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.