mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.
https://github.com/torvalds/linux/commit/5c455c5ab332773464d02ba17015acdca198f03d
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://lore.kernel.org/r/[email protected]
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/