CVE-2026-53330

Kernel memory over-read via eight-repeater LTTPR count

Published Jul 1, 2026 · Updated Jul 1, 2026

Out-of-bounds read in the Linux kernel AMD display driver allows local users to read past an array boundary through an eight-repeater LTTPR report. The dp_get_eq_aux_rd_interval() path indexes the seven-element dc_lttpr_caps.aux_rd_interval array at position seven when DPCD reports eight repeaters. The condition requires the AMD display path and a qualifying DisplayPort sink; upstream reports no specific disclosure, crash, or hang channel.

CVSS severity7.1
High
EPSS probability0.16%
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 read in the Linux kernel AMD display driver allows local users to read past an array boundary through an eight-repeater LTTPR report. The dp_get_eq_aux_rd_interval() path indexes the seven-element dc_lttpr_caps.aux_rd_interval array at position seven when DPCD reports eight repeaters. The condition requires the AMD display path and a qualifying DisplayPort sink; upstream reports no specific disclosure, crash, or hang channel.

The record

CVE
CVE-2026-53330
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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 <6.18.36
  2. Affected versionversion=0 <7.0.13
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <454d3b3d499c18373f8960d31aea48338a3ca9e0
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e8b4d37eba05141ee01794fc6b7f2da808cee83b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0 <6.18.36; version=0 <7.0.13; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <454d3b3d499c18373f8960d31aea48338a3ca9e0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e8b4d37eba05141ee01794fc6b7f2da808cee83b

Published CVSS scores

7.1NIST NVDCVSS: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-125Out-of-bounds Read

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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