CVE-2019-15126
linux-firmware: Transmission of data encrypted with an all-zero session key after disassociation
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 5, 2020
Updated · June 27, 2026
Description
An issue was discovered on Broadcom Wi-Fi client devices. Specifically timed and handcrafted traffic can cause internal errors (related to state transitions) in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic, a different vulnerability than CVE-2019-9500, CVE-2019-9501, CVE-2019-9502, and CVE-2019-9503.
Statement
This issue is present in the Broadcom Wi-Fi client devices firmware and is not fixable in software. While Red Hat ships certain hardware firmware binary blobs via linux-firmware package we rely on the hardware vendors to populate (and document) these firmware binary blobs with updated firmwares at their discretion. As a consequence, we are currently unable to tell whether current linux-firmware packages address this particular vulnerability.
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 · 3.1CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-1240 · Use of a Cryptographic Primitive with a Risky Implementation