CVE-2026-45958

Kernel-memory disclosure via untrusted EDID pointer

Published May 27, 2026 · Updated May 27, 2026

Untrusted pointer dereference in affected Linux Kernel releases allows local users to read kernel memory through an Exynos VIDI ioctl. The vidi_connection_ioctl() handler treats the user-supplied vidi->edid value as a kernel address and derives the EDID copy length from data read there, rather than first copying the buffer from user space. A low-privilege DRM client with access to /dev/dri/cardN can expose up to 32 KB from a chosen kernel address or trigger a kernel oops or panic with an invalid address.

CVSS severity7.1
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted pointer dereference in affected Linux Kernel releases allows local users to read kernel memory through an Exynos VIDI ioctl. The vidi_connection_ioctl() handler treats the user-supplied vidi->edid value as a kernel address and derives the EDID copy length from data read there, rather than first copying the buffer from user space. A low-privilege DRM client with access to /dev/dri/cardN can expose up to 32 KB from a chosen kernel address or trigger a kernel oops or panic with an invalid address.

The record

CVE
CVE-2026-45958
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1005, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=0 <5.10.253
  2. Affected versionversion=0 <5.15.203
  3. Affected versionversion=0 <6.1.167
  4. Affected versionversion=0 <6.12.77
  5. Affected versionversion=0 <6.18.14
  6. Affected versionversion=0 <6.19.4
  7. Affected versionversion=0 <6.6.130
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <13537f7f6d28a87ee2e496e071b6ad9541905f23
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <235d702b771416b8a61e81bb09ba39282e4268fd
  10. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2e147aa3169b83eaf044776f81d86235bf147de1
  11. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4949e32387fe315b59ad5f422c9fc52836fbdd1e
  12. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c4193829109f38b2855de77981adc2e066286c7
  13. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7efb6a4e6b1b523e744d17e6249757ed97caae7c
  14. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c2914c0ca7557c6c5c845621cb6d6c9f26ab5a8c
  15. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4c98c077c7fb2dfdece7d605e694b5ea2665085

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0 <5.10.253; version=0 <5.15.203; version=0 <6.1.167; version=0 <6.12.77; version=0 <6.18.14; version=0 <6.19.4; version=0 <6.6.130; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <13537f7f6d28a87ee2e496e071b6ad9541905f23; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <235d702b771416b8a61e81bb09ba39282e4268fd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2e147aa3169b83eaf044776f81d86235bf147de1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4949e32387fe315b59ad5f422c9fc52836fbdd1e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c4193829109f38b2855de77981adc2e066286c7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7efb6a4e6b1b523e744d17e6249757ed97caae7c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c2914c0ca7557c6c5c845621cb6d6c9f26ab5a8c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4c98c077c7fb2dfdece7d605e694b5ea2665085

Published CVSS scores

7.1Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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-476NULL Pointer Dereference
T1005Data from Local System
T1499.004Application or System Exploitation

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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