CVE-2026-90022

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_midi2: fix use-after-free in string attribute show path f_midi2_opts_str_show() takes the string lock internally, but its callers dereference the opts->info.<field> pointer before calling it, outside the lock. This races with f_midi2_opts_str_store(), which frees the old string under opts->lock when the attribute is written concurrently, the show path can read a pointer that gets freed before the lock inside str_show() is even taken. Change f_midi2_opts_str_show() to take a pointer to the string field, matching the existing pattern in f_midi2_opts_str_store(), and dereference it only after the lock is held. Update all three callers (iface_name, block name, and the EP string option macro) accordingly.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2
https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594
https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce
https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f
https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b

Configurations

No configuration.

History

16 Sep 2026, 15:18

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8

Information

Published : 2026-09-16 11:17

Updated : 2026-09-17 10:17

NVD link : CVE-2026-90022

Mitre link : CVE-2026-90022

CVE.ORG link : CVE-2026-90022

JSON object : View

Products Affected

No product.

CWE

No CWE.

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