CVE-2026-68128

/// Technical description

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

ice: reject out-of-range ptype in ice_parser_profile_init

set_bit(rslt->ptype, prof->ptypes) operates on a DECLARE_BITMAP of

ICE_FLOW_PTYPE_MAX (1024) bits. Nothing prevents a malicious VF from

providing ptype >= 1024 through VIRTCHNL, resulting in a write past

the end of the bitmap and a kernel page fault.

Reproduced with a custom kernel module injecting a crafted

VIRTCHNL_OP_ADD_RSS_CFG on E810-C QSFP (8086:1592),

FW 4.91 0x800214af 1.3909.0, ICE COMMS DDP 1.3.53.0,

kernel 7.1.0-rc1.

crash_parser: ice_parser_profile_init @ ffffffffc0d61b60

crash_parser: setting ptype=0xffff (max valid=1023)

crash_parser: calling ice_parser_profile_init -- expect OOB crash!

BUG: kernel NULL pointer dereference, address: 0000000000000000

Oops: Oops: 0002 [#1] SMP NOPTI

CPU: 56 UID: 0 PID: 165011 Comm: insmod Kdump: loaded Tainted: G S U OE 7.1.0-rc1 #1

Hardware name: Intel Corporation S2600BPB/S2600BPB

RIP: 0010:ice_parser_profile_

/// 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