CVE-2026-93121
kernel: usb: gadget: f_fs: Fix fence cleanup in ffs_dmabuf_transfer() error paths
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's USB gadget function filesystem (f_fs) component. Specifically, an issue in the ffs_dmabuf_transfer() function's error handling can lead to undefined behavior. This occurs when a fence object is prematurely deallocated without proper initialization, potentially causing system instability or other unpredictable outcomes.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-824 · Access of Uninitialized Pointer