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CVE-2026-90335

tty: skip cdev_del() when no cdev is registered

N/A
Published: September 17, 2026 at 04:08 PM UTC
Updated: October 21, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
4.3a3a10ce3429e5dee623ad5c8407ea58e204fcb0a
Vendor states this is fixed in 3dbf85ef40b6366ba15e882f7536cdc98bea579a (fixed)
Vendor states this is fixed in c3b5623fd97648f2747444aa8932ae604662df93 (fixed)
Vendor states this is fixed in 4.3 (unaffected)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.18.57 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://git.kernel.org/stable/c/3dbf85ef40b6366ba15e882f7536cdc98bea579a
Source: cverecord
https://git.kernel.org/stable/c/c3b5623fd97648f2747444aa8932ae604662df93
Source: cverecord
https://git.kernel.org/stable/c/2af4c46b429907edc8cb069c78fca1d950120b98
Source: cverecord
https://git.kernel.org/stable/c/ea3d2fae7c1d6492145976553817d22e8ef69a0e
Source: cverecord
https://git.kernel.org/stable/c/21031bd0d662549412378110c989b164feb6e4be

Quick Info

StatusRECEIVED

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