CVE-2026-64522

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA<br /> <br /> mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating<br /> software state and skipping hardware offload setup.<br /> <br /> That path jumps to the common success label before taking the eswitch mode<br /> block. After tunnel-mode validation was moved earlier, the common success<br /> label unconditionally calls mlx5_eswitch_unblock_mode(). For acquire SAs,<br /> this decrements esw-&gt;offloads.num_block_mode without a matching increment.<br /> <br /> Return directly after installing the acquire SA offload handle, so only the<br /> paths that successfully called mlx5_eswitch_block_mode() call the matching<br /> unblock.