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Linux EUVDEUVD-2026-81995

| CVE-2026-90334
2026-09-17 Linux GHSA-346v-hcmm-349w
Information Disclosure Linux

Lifecycle Timeline

2
Patch available
Sep 17, 2026 - 17:19 EUVD
CVE Published
Sep 17, 2026 - 16:08 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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.

Analysis

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. …

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EUVD-2026-81995 vulnerability details – vuln.today
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