The Switch Configuration Tools Backend (clcmd_server) in Cumulus Linux 2.5.3 and earlier allows local users to execute arbitrary commands via shell metacharacters in a cl-rctl command label.

bgpd in FRRouting (FRR) before 2.0.2 and 3.x before 3.0.2, as used in Cumulus Linux before 3.4.3 and other products, allows remote attackers to obtain sensitive information via a malformed BGP UPDATE packet from a connected peer, which triggers transmission of up to a few thousand unintended bytes because of a mishandled attribute length, aka RN-690 (CM-18492).