CVE-2026-23021
kernel: Linux kernel (net: usb: pegasus): Denial of Service due to memory leak
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 31, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's net: usb: pegasus module. A local attacker with low privileges could exploit this vulnerability when the usb_submit_urb() function fails during asynchronous writes to device registers. This can lead to a memory leak, potentially causing a Denial of Service (DoS) due to resource exhaustion.
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-772 · Missing Release of Resource after Effective Lifetime