What is GHSA-5wc4-c9q8-2q27?

GHSA-5wc4-c9q8-2q27 is a security advisory published by GitHub Security Advisories with unknown severity. In the Linux kernel, the following vulnerability has been resolved: tty: skip cdev_del() when no...

Which CVE IDs does GHSA-5wc4-c9q8-2q27 cover?

GHSA-5wc4-c9q8-2q27 covers the following CVE IDs: CVE-2026-90335. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-5wc4-c9q8-2q27unknown

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdev_del() when no...

Vendor

GitHub Security Advisories

Published

September 17, 2026

Last Modified

September 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-90335 →

📋 Description

In the Linux kernel, the following vulnerability has been resolved:

tty: skip cdev_del() when no cdev is registered

TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdev_del(), causing a NULL-pointer dereference.

Only delete the cdev when the slot is not NULL.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-90335
https://git.kernel.org/stable/c/3dbf85ef40b6366ba15e882f7536cdc98bea579a
https://git.kernel.org/stable/c/c3b5623fd97648f2747444aa8932ae604662df93
https://github.com/advisories/GHSA-5wc4-c9q8-2q27