CVE-2026-68128

Host kernel crash via unchecked VF ptype

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds write in the Linux ice driver allows guest OS users to crash the host kernel through a crafted VIRTCHNL RSS request. ice_parser_profile_init passes an unbounded VF-supplied ptype to set_bit against a 1,024-bit prof->ptypes bitmap, writing beyond its end. A malicious virtual function on a host using the Intel ice driver can reach the flaw; the demonstrated result is a kernel page fault and host service interruption.

CVSS severity8.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux ice driver allows guest OS users to crash the host kernel through a crafted VIRTCHNL RSS request. ice_parser_profile_init passes an unbounded VF-supplied ptype to set_bit against a 1,024-bit prof->ptypes bitmap, writing beyond its end. A malicious virtual function on a host using the Intel ice driver can reach the flaw; the demonstrated result is a kernel page fault and host service interruption.

The record

CVE
CVE-2026-68128
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.12
  2. Affected versionversion=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <33cc15aaf2491166dddc018b24b3b7db53ec01b2
  3. Affected versionversion=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <59abb87159c53605c063f6e2ceb215b5eba43ee6
  4. Affected versionversion=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <5e496f2b615cec4b45537cfb5b54f36a51dc8753
  5. Affected versionversion=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <33cc15aaf2491166dddc018b24b3b7db53ec01b2; version=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <59abb87159c53605c063f6e2ceb215b5eba43ee6; version=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <5e496f2b615cec4b45537cfb5b54f36a51dc8753; version=e312b3a1e2092f612914dbc4fa5d96b4d8ff94ef <fe2f8d5a77adea38e889fe3d6cde1b76d4a635bf

Published CVSS scores

8.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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