[FYI] Critical low-level Zigbee coordinator firmware bug in old Texas Instruments Z-Stack 3

FYI, Wwalltt posted a firmware upgrade recommendation yesterday on Home Assistant Reddit channel:

https://www.reddit.com/r/homeassistant/comments/l9uhvm/psa_zigbee_network_lockup_bug_affecting/

PSA: Zigbee network lockup bug affecting Zigbee2mqtt and ZHA (zigpy-znp) fixed

Just as a public service announcement, a long-standing bug in Texas Instruments Z-Stack that caused lockups and network shutdown on zigbee2mqtt and ZHA (when using a TI board) has just been fixed.

The bug would be very rare for some or most users, but more common for users with a large (100+) number of devices. The symptoms would be loss of communication with the Zigbee coordinator radio. The serial port would still be present, but nothing would be returned from Z-Stack.

This bug affected:

• Electrolama Zig-a-Zig-Ah (ZZH)
• Slaesh CC2652 stick
• Texas Instruments CC1352P2
• Texas Instruments CC26X2R1
• Texas Instruments CC2538

Here is the link to the updated ZStack firmware (dated 2021-01-20) that is supposed to fix the issue:

https://github.com/Koenkk/Z-Stack-firmware/tree/master/coordinator/Z-Stack_3.x.0/bin

Update! Link updated as Koenkk has moved these updated firmware image files from the “develop” tree to the “master” (mainline) tree.

Here are the Texas Instrument release notes:

http://software-dl.ti.com/simplelink/esd/simplelink_cc13x2_26x2_sdk/4.40.00.44/exports/changelog.html

ZIGBEE-1172 NPI memory leak from buffer deallocation order

Update today and share your results if this issue has been affecting you.

1 post - 1 participant

Read full topic