CVE-2026-80739

CVE-2026-80739 affects the Linux kernel 's mlx5_core driver (Mellanox/NVIDIA network hardware), specifically the TC (Traffic Control) offload path in net/mlx5e. When __mlx5e_add_fdb_flow() fails for a peer flow , the cleanup path mlx5e_tc_del_flow() acquires the ESW devcom lock unconditionally wh...

CVE-2026-80739 net/mlx5e: TC, Check if flow is PEER before acquiring devcom lock

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, Check if flow is PEER before acquiring devcom lock In case mlx5eaddfdbflow fails in lower levels, the flow is deleted via mlx5etcdelflow, and mlx5etcdelflow is acquiring ESW devcom lock without condition. In...

EUVD-2026-59243

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable mlx5laggetdevseq will return error when the peer isn't in the LAG or when no device is marked as master. Result bad memory access and kernel crash1. Hence, skip th...

CVE-2026-23173

CVE-2026-23173 affects the Linux kernel mlx5e driver (TC flow offload). The issue arises when deleting TC steering flows: the code previously iterated over all possible ports, potentially touching non-existent peers and risking a NULL pointer dereference. The fix ensures cleanup only occurs for d...

UBUNTU-CVE-2023-54216

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, Fix using eswitch mapping in nic mode Cited patch is using the eswitch object mapping pool while in nic mode where it isn't initialized. This results in the trace below 0. Fix that by using either nic or eswitch...