CVE-2026-46205

Local kernel code execution via private IOCTL overflow

Published May 28, 2026 · Updated May 28, 2026

Heap corruption in the Linux kernel AtomISP driver allows local users to execute kernel code via private IOCTLs on an AtomISP device. In atomisp_cp_dvs_6axis_config, a user-controlled size drives a copy into a smaller stream-sized heap allocation, producing an out-of-bounds write. Exploitation requires local access to the AtomISP /dev/video device node, such as video-group access, and grants kernel-memory disclosure, arbitrary kernel writes, code execution, or a kernel panic.

CVSS severity7.8
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

Heap corruption in the Linux kernel AtomISP driver allows local users to execute kernel code via private IOCTLs on an AtomISP device. In atomisp_cp_dvs_6axis_config, a user-controlled size drives a copy into a smaller stream-sized heap allocation, producing an out-of-bounds write. Exploitation requires local access to the AtomISP /dev/video device node, such as video-group access, and grants kernel-memory disclosure, arbitrary kernel writes, code execution, or a kernel panic.

The record

CVE
CVE-2026-46205
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=4.12
  2. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <2b7eb2c5dc72f0fc954ac4aa155f9e285e937f7c
  3. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <6850a439f8d23d4979624f1d6880d3118d473a28
  4. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <6f1ce75a75c65061e7a720c3d0ee5f8adab7a2d3
  5. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <8c7a281a99224a5b9af99c4dcd98d68eea75926c
  6. Affected versionversion=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <c7848b67ef10f581114b6a2f52b160fc20eb52c9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.12; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <2b7eb2c5dc72f0fc954ac4aa155f9e285e937f7c; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <6850a439f8d23d4979624f1d6880d3118d473a28; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <6f1ce75a75c65061e7a720c3d0ee5f8adab7a2d3; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <8c7a281a99224a5b9af99c4dcd98d68eea75926c; version=a49d25364dfb9f8a64037488a39ab1f56c5fa419 <c7848b67ef10f581114b6a2f52b160fc20eb52c9

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/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

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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