# CVE-2026-68128: ice: reject out-of-range ptype in ice_parser_profile_init

> A malicious virtual function can trigger a kernel page fault and denial of service by providing an out-of-range packet type value to the Intel ice network driver.

- **Severity:** High 8.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Aug 2026
- **Updated:** 19 Oct 2026
- **Also known as:** BELL-CVE-2026-68128, DEBIAN-CVE-2026-68128, GHSA-4gjp-76hx-w497, UBUNTU-CVE-2026-68128

## What is CVE-2026-68128?

CVE-2026-68128 is a high-severity memory corruption vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-68128?


## How do I fix CVE-2026-68128?

Apply the vendor's patch.

## Is CVE-2026-68128 being exploited?

There is no known exploitation of CVE-2026-68128 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-68128 and fix it if it is affected.

What it is: CVE-2026-68128 is a high-severity memory corruption vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-68128 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-68128/ (Markdown: https://insights.sbomify.com/CVE-2026-68128/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-68128
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68128
- OSV: https://osv.dev/vulnerability/CVE-2026-68128

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-68128/
Summaries are generated and may contain mistakes; the official description above is the record.