Redpine Signals, Inc. — 3 prefixes (MA-L)

Redpine Signals, Inc. holds three IEEE MA-L (24-bit OUI) assignments — 88:DA:1A, 80:C9:55, and 00:23:A7 — all registered to the same Hyderabad, India address (Plot 87, Sagar Society, Hyderabad, AP, IN 500034). Redpine was a fabless semiconductor company founded in 2001 with headquarters in San Jose, California and its R&D center in Hyderabad, building ultra-low-power multi-protocol wireless SoCs and modules for the IoT and embedded markets. Its registered OUIs appear on Wi-Fi/Bluetooth devices built around the RS9113 and RS9116 chipset families (n-Link hosted modules, WiSeConnect embedded SoCs, and WaveCombo 802.11p V2X modules) — spanning consumer and industrial IoT, smart home, wearables, RTLS, and automotive V2X. The connectivity business, IP portfolio, and Hyderabad team were acquired by Silicon Labs on April 28, 2020 for $308 million, so as an independent connectivity vendor Redpine is now defunct; the legacy redpinesignals.com site partially redirects into Silicon Labs' Wi-Fi product line. One public CVE exists against the Linux kernel rsi_91x driver (CVE-2026-46187, CVSS 3.1 4.7 MEDIUM) — a local-only use-after-free with no remote vector. Because these are globally-administered prefixes, a Redpine OUI reliably identifies genuine Redpine/Silicon-Labs-derived hardware, but its absence does not rule one out where MAC randomization is in play.

IEEE assignment

3 MA-L prefixes (88:DA:1A, 80:C9:55, 00:23:A7) → Redpine Signals, Inc. [Confirmed] — IEEE MA-L (lines 2201, 9484, 20333)

Registry / block size

MA-L (24-bit OUI), 3 prefixes; no MA-M or MA-S entries [Confirmed] — the IEEE MA-L registry; the IEEE MA-M registry (no match); the IEEE MA-S registry (no match). NOTE: IEEE's public OUI data publishes NO assignment/registration date — allocated_date stays null; any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Plot 87, Sagar Society, Hyderabad, AP, IN 500034 (registry address); corporate HQ was San Jose, CA, US [Confirmed] — IEEE MA-L the IEEE MA-L registry; en.wikipedia.org/wiki/Redpine_Signals

Company status

Defunct as an independent connectivity vendor. Founded 2001, HQ San Jose CA; connectivity business (Wi-Fi/Bluetooth, patent portfolio, ~200-engineer Hyderabad R&D center) acquired by Silicon Labs on 2020-04-28 for $308M.

[Confirmed] — news.silabs.com (2020-04-28 acquisition completion); prnewswire.com; en.wikipedia.org/wiki/Redpine_Signals

Device types

Wireless chipset / SoC / module manufacturer — IoT endpoints, embedded systems, handheld/mobile. Product lines: n-Link (RS9113: 1x1 802.11a/b/g/n + BT 4.0 + ZigBee; RS9116: dual-band 802.11a/b/g/n + BT 5 + 802.15.4/Thread/ZigBee), WiSeConnect (embedded Wi-Fi + BT SoCs / WiSeMCU), WaveCombo (802.11p V2X). Host interfaces: SDIO, SPI, UART, USB; also mini-PCIe form factor.

[Confirmed] — redpinesignals.com/Products/; RS9113 datasheet (mouser.com); businesswire.com (2015 mini-PCIe IoT announce)

Use cases

IoT, smart home, wearables/hearables, voice assistants/smart speakers, RTLS, industrial embedded, automotive V2X, legacy smartphones/tablets, embedded-Linux add-on cards [Confirmed] — redpinesignals.com/Products/; prnewswire.com (2019 smart-home chip)

Verified sample prefixes (all MA-L, Redpine Signals, Inc.)

88:DA:1A, 80:C9:55, 00:23:A7 [Confirmed] — IEEE MA-L the IEEE MA-L registry

Security context

One public CVE — CVE-2026-46187 (published 2026-05-28), use-after-free race (CWE-362) in the Linux kernel rsi_91x driver; CVSS 3.1 Base 4.7 MEDIUM (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). Local availability impact (DoS / potential kernel memory corruption), no confidentiality/integrity impact; requires local low-priv access and a high-complexity race window; no public exploits. Patched across Linux kernel branches; distro patches for RHEL 9, Ubuntu 24.04 LTS, Debian 12, SUSE 15 SP6. No CVEs found against Redpine firmware/chipset hardware.

[Confirmed] — nvd.nist.gov/vuln/detail/CVE-2026-46187

Website

https://www.redpinesignals.com/ (legacy; partially redirects to Silicon Labs). Active product pages now at https://www.silabs.com/wireless/wi-fi [Confirmed] — redpinesignals.com/Products/; news.silabs.com

Related vendors

Silicon Labs (Silicon Laboratories Inc.) — acquired the connectivity business and IP in April 2020 [Confirmed] — news.silabs.com

Analyst note

A globally-administered Redpine OUI identifies genuine RS9113/RS9116-based hardware; absence does not mean "not Redpine" where MAC randomization is used. Devices running embedded Linux with the rsi_91x driver in multi-user environments should apply the CVE-2026-46187 kernel patch.