CVE-2025-21674

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: Fix inversion dependency warning while enabling IPsec tunnel

Attempt to enable IPsec packet offload in tunnel mode in debug kernel

generates the following kernel panic, which is happening due to two

issues:

1. In SA add section, the should be _bh() variant when marking SA mode.

2. There is not needed flush_workqueue in SA delete routine. It is not

needed as at this stage as it is removed from SADB and the running work

will be canceled later in SA free.

=====================================================

WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected

6.12.0+ #4 Not tainted

-----------------------------------------------------

charon/1337 [HC0[0]:SC0[4]:HE1:SE0] is trying to acquire:

ffff88810f365020 (&xa->xa_lock#24){+.+.}-{3:3}, at: mlx5e_xfrm_del_state+0xca/0x1e0 [mlx5_core]

and this task is already holding:

ffff88813e0f0d48 (&x->lock){+.-.}-{3:3}, at: xfrm_state_delete+0x16/0x30

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References