CVE-2025-38053 Information

Jun 19, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

idpf: fix null-ptr-deref in idpf_features_check

idpf_features_check is used to validate the TX packet. skb header length is compared with the hardware supported value received from the device control plane. The value is stored in the adapter structure and to access it vport pointer is used. During reset all the vports are released and the vport pointer that the netdev private structure points to is NULL.

To avoid null-ptr-deref store the max header length value in netdev private structure. This also helps to cache the value and avoid accessing adapter pointer in hot path.

BUG: kernel NULL pointer dereference address: 0000000000000068 … RIP: 0010:idpf_features_check+0x6d/0xe0 [idpf] Call Trace: ? __die+0x23/0x70 ? page_fault_oops+0x154/0x520 ? exc_page_fault+0x76/0x190 ? asm_exc_page_fault+0x26/0x30 ? idpf_features_check+0x6d/0xe0 [idpf] netif_skb_features+0x88/0x310 validate_xmit_skb+0x2a/0x2b0 validate_xmit_skb_list+0x4c/0x70 sch_direct_xmit+0x19d/0x3a0 __dev_queue_xmit+0xb74/0xe70 …

Reference

https://git.kernel.org/stable/c/2dabe349f7882ff1407a784d54d8541909329088 https://git.kernel.org/stable/c/bf1e751c5a5611aa037ab44cca955c141eb68dcc https://git.kernel.org/stable/c/f6f5e9c8cb680c3cb9771fd9fa114319cbc4f514

CNNVD-202506-2188 (Published: 2025-06-18)

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