This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-90334 →
DEBIAN-CVE-2026-90334
In the Linux kernel, the following vulnerability has been resolved: tty: clear cdev pointer after cdev_add() failure tty_cdev_add() drops the cdev r...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.190-1"}]}]
Debian:13
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.111-1"}]}]
Debian:14
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.6-1"}]}]
Debian:12
linux-6.12
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.111-1~deb12u1"}]}]
References
- advisory security-tracker.debian.org