CVE-2026-68128
Received Received - Intake

Buffer Overflow in Linux Kernel ICE Driver

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: kernel.org

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_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.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-68128
EUVD
EUVD-2026-55509

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
intel ice 4.91
intel ice_comms_ddp 1.3.53.0
intel linux_kernel 7.1.0-rc1

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Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a vulnerability in the Linux kernel's ice network driver. It involves a malicious virtual function (VF) providing an out-of-range ptype value through the VIRTCHNL interface. The driver uses a bitmap of 1024 bits but fails to validate the ptype, allowing writes beyond the bitmap's bounds. This causes a kernel page fault and crash.

Detection Guidance

This vulnerability can be detected by checking for kernel crashes or page faults related to the ice driver module, particularly when handling VIRTCHNL operations. Monitor system logs for Oops or NULL pointer dereference errors involving ice_parser_profile_init. No specific commands are provided in the context.

Impact Analysis

An attacker with access to a virtual function on a vulnerable system could trigger a kernel crash, leading to denial of service. The crash could cause system instability or require a reboot to recover.

Mitigation Strategies

Apply the latest kernel updates or patches that address this issue. Ensure the ice driver is updated to a version that includes bounds checking for ptype values. Avoid using untrusted VF configurations that could trigger the vulnerability.

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