---
id: CVE-2026-68128
title: 'ice: reject out-of-range ptype in ice_parser_profile_init'
summary: |-
  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 pr…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <
    fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf
  - >-
    Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <
    5e496f2b615cec4b45537cfb5b54f36a51dc8753
  - >-
    Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <
    33cc15aaf2491166dddc018b24b3b7db53ec01b2
  - >-
    Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <
    59abb87159c53605c063f6e2ceb215b5eba43ee6
  - Linux 6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:44:20.996927Z'
published: '2026-08-10'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:52:58.450Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-68128'
references:
  - url: 'https://git.kernel.org/stable/c/fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf'
  - url: 'https://git.kernel.org/stable/c/5e496f2b615cec4b45537cfb5b54f36a51dc8753'
  - url: 'https://git.kernel.org/stable/c/33cc15aaf2491166dddc018b24b3b7db53ec01b2'
  - url: 'https://git.kernel.org/stable/c/59abb87159c53605c063f6e2ceb215b5eba43ee6'
tags:
  - cve.org
epss: 0.00138
epssPercentile: 0.02841
ingestedAt: '2026-10-16T17:24:46.841Z'
---

## Overview

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_init+0x2d/0x1d0 [ice]
Call Trace:
 <TASK>
 ? __pfx_ice_parser_profile_init+0x10/0x10 [ice]
 crash_init+0x127/0xff0 [crash_parser]
 do_one_initcall+0x45/0x310
 do_init_module+0x64/0x270
 init_module_from_file+0xcc/0xf0
 idempotent_init_module+0x17b/0x280
 __x64_sys_finit_module+0x6e/0xe0

Bail out early with -EINVAL when ptype is out of range.

## Affected

- `Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef < fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf`
- `Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef < 5e496f2b615cec4b45537cfb5b54f36a51dc8753`
- `Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef < 33cc15aaf2491166dddc018b24b3b7db53ec01b2`
- `Linux >= e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef < 59abb87159c53605c063f6e2ceb215b5eba43ee6`
- `Linux 6.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.