CVE-2026-98764
kernel: usb: gadget: f_fs: Fix NULL pointer dereference in FUNCTIONFS_ENDPOINT_DESC
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 23, 2026
Description
A flaw was found in the Linux kernel's USB (Universal Serial Bus) FunctionFS gadget subsystem. A local user can cause a Denial of Service (DoS) by triggering a kernel crash when querying endpoint descriptors on a USB gadget configured with lower-speed settings than the active connection speed. In this scenario, the driver accesses an uninitialized memory pointer without proper validation, leading to an immediate system crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference