CVE-2026-64522
HIGH
8,8
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA
mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating
software state and skipping hardware offload setup.
That path jumps to the common success label before taking the eswitch mode
block. After tunnel-mode validation was moved earlier, the common success
label unconditionally calls mlx5_eswitch_unblock_mode(). For acquire SAs,
this decrements esw->offloads.num_block_mode without a matching increment.
Return directly after installing the acquire SA offload handle, so only the
paths that successfully called mlx5_eswitch_block_mode() call the matching
unblock.
https://git.kernel.org/stable/c/abe003b33223ff33552f291644bf35d9c2f992fb
https://git.kernel.org/stable/c/b5bd4249e430f5963d559708ee96a671716d2400
https://git.kernel.org/stable/c/ecafd8284e527666e83261e6e57a7c7341d591cb