CVE-2026-68325

Memory corruption via ACPI HID map overflow

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds write in Linux 4.7 and affected later revisions allows local users to corrupt memory via excessive ivrs_acpihid parameters. The early parser appends a fifth HID and UID entry to the fixed four-element early_acpihid_map array because it increments the count without checking capacity. Exploitation requires a boot configuration with more than four entries; the overwrite can crash the system or execute code in kernel context.

CVSS severity7.0
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds write in Linux 4.7 and affected later revisions allows local users to corrupt memory via excessive ivrs_acpihid parameters. The early parser appends a fifth HID and UID entry to the fixed four-element early_acpihid_map array because it increments the count without checking capacity. Exploitation requires a boot configuration with more than four entries; the overwrite can crash the system or execute code in kernel context.

The record

CVE
CVE-2026-68325
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.7
  2. Affected versionversion=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <030a8e84f8f1b6e96f469c84a13a225c3699910b
  3. Affected versionversion=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <1e31d2394e0db69541b1591d46c5ad6431c81db3
  4. Affected versionversion=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <abe5d7962f09adada9c4fb25b816dddd3f97c55d
  5. Affected versionversion=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <e5ebe8544df1a1c3611739a8622156094fe470df
  6. Affected versionversion=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <fb80117fddb5b477218dc99bb53911b72c3847f8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.7; version=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <030a8e84f8f1b6e96f469c84a13a225c3699910b; version=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <1e31d2394e0db69541b1591d46c5ad6431c81db3; version=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <abe5d7962f09adada9c4fb25b816dddd3f97c55d; version=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <e5ebe8544df1a1c3611739a8622156094fe470df; version=ca3bf5d47cec8b7614bcb2e9132c40081d6d81db <fb80117fddb5b477218dc99bb53911b72c3847f8

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo