CVE-2026-53137 - Vulnerability Details

- drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size

[Why & How]
During HDCP 2.x repeater authentication over HDMI, the driver reads the
sink's RxStatus register and extracts a 10-bit message size field (max
value 1023). This value is used as the read length for the ReceiverID
list without being clamped to the size of the destination buffer
rx_id_list[177]. A malicious HDMI repeater could advertise a message
size larger than the buffer, causing an out-of-bounds write during the
I2C read.

Clamp the read length in mod_hdcp_read_rx_id_list() to the size of the
rx_id_list buffer, matching the approach already used in the DP branch.

(cherry picked from commit 229212219e4247d9486f8ba41ef087358490be09)

Published: 2026-06-25

Score: n/a

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 3c4444aec06c74fbc05661f370954ac814963c38
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 91fb41218c413989d8b6c837748751454b452d68
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 964e50ef7b8f09815a7d05b8326af700f8d5bc96
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 79e0273272a05fb26f9b1e55bf1a52eefc3b7b35
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< bfba882cfcd08f6540f72f48e786b6404f5d2c5b
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 1906064d50d194a145486e5caf3db3e708b6f6ef
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< 98cfb7530ea91d8e5e928285cdce58e1131f6e83
`eff682f83c9c2030761e7536c5d97e1b20f71c15`	affected	< f0f3981c43b32cadfe373d636d9e9ca522bb3702

Linux

affected

Version	Status	Constraints
`5.6`	affected	—
`0`	unaffected	< 5.6
`5.10.259`	unaffected	≤ 5.10.*
`5.15.210`	unaffected	≤ 5.15.*
`6.1.176`	unaffected	≤ 6.1.*
`6.6.143`	unaffected	≤ 6.6.*
`6.12.94`	unaffected	≤ 6.12.*
`6.18.36`	unaffected	≤ 6.18.*
`7.0.13`	unaffected	≤ 7.0.*
`7.1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,3c4444aec06c74fbc05661f370954ac814963c38)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,91fb41218c413989d8b6c837748751454b452d68)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,964e50ef7b8f09815a7d05b8326af700f8d5bc96)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,79e0273272a05fb26f9b1e55bf1a52eefc3b7b35)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,bfba882cfcd08f6540f72f48e786b6404f5d2c5b)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,1906064d50d194a145486e5caf3db3e708b6f6ef)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,98cfb7530ea91d8e5e928285cdce58e1131f6e83)`	affected	code_commit	—
`[eff682f83c9c2030761e7536c5d97e1b20f71c15,f0f3981c43b32cadfe373d636d9e9ca522bb3702)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`5.6`	affected	generic	—
`[0,5.6)`	unaffected	generic	—
`[5.10.259,5.11.0)`	unaffected	semver	—
`[5.15.210,5.16.0)`	unaffected	semver	—
`[6.1.176,6.2.0)`	unaffected	semver	—
`[6.6.143,6.7.0)`	unaffected	semver	—
`[6.12.94,6.13.0)`	unaffected	semver	—
`[6.18.36,6.19.0)`	unaffected	semver	—
`[7.0.13,7.1.0)`	unaffected	semver	—
`[7.1,*]`	unaffected	generic	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00212.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/1906064d50d194a145486e5caf3db3e708b6f6ef
https://git.kernel.org/stable/c/3c4444aec06c74fbc05661f370954ac814963c38
https://git.kernel.org/stable/c/79e0273272a05fb26f9b1e55bf1a52eefc3b7b35
https://git.kernel.org/stable/c/91fb41218c413989d8b6c837748751454b452d68
https://git.kernel.org/stable/c/964e50ef7b8f09815a7d05b8326af700f8d5bc96
https://git.kernel.org/stable/c/98cfb7530ea91d8e5e928285cdce58e1131f6e83
https://git.kernel.org/stable/c/bfba882cfcd08f6540f72f48e786b6404f5d2c5b
https://git.kernel.org/stable/c/f0f3981c43b32cadfe373d636d9e9ca522bb3702
https://lore.kernel.org/linux-cve-announce/2026062543-CVE-2026-53137-e711@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-53137
https://www.cve.org/CVERecord?id=CVE-2026-53137

History

Fri, 26 Jun 2026 12:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-787
References		https://lore.kernel.org/linux-cve-announce/2026062543-CVE-2026-53137-e711@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-53137 https://www.cve.org/CVERecord?id=CVE-2026-53137

Thu, 25 Jun 2026 11:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-120

Thu, 25 Jun 2026 09:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size [Why & How] During HDCP 2.x repeater authentication over HDMI, the driver reads the sink's RxStatus register and extracts a 10-bit message size field (max value 1023). This value is used as the read length for the ReceiverID list without being clamped to the size of the destination buffer rx_id_list[177]. A malicious HDMI repeater could advertise a message size larger than the buffer, causing an out-of-bounds write during the I2C read. Clamp the read length in mod_hdcp_read_rx_id_list() to the size of the rx_id_list buffer, matching the approach already used in the DP branch. (cherry picked from commit 229212219e4247d9486f8ba41ef087358490be09)
Title		drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/1906064d50d194a145486e5caf3db3e708b6f6ef https://git.kernel.org/stable/c/3c4444aec06c74fbc05661f370954ac814963c38 https://git.kernel.org/stable/c/79e0273272a05fb26f9b1e55bf1a52eefc3b7b35 https://git.kernel.org/stable/c/91fb41218c413989d8b6c837748751454b452d68 https://git.kernel.org/stable/c/964e50ef7b8f09815a7d05b8326af700f8d5bc96 https://git.kernel.org/stable/c/98cfb7530ea91d8e5e928285cdce58e1131f6e83 https://git.kernel.org/stable/c/bfba882cfcd08f6540f72f48e786b6404f5d2c5b https://git.kernel.org/stable/c/f0f3981c43b32cadfe373d636d9e9ca522bb3702

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-06-25T08:38:25.977Z

Updated: 2026-06-25T08:38:25.977Z

Reserved: 2026-06-09T07:44:35.387Z

Link: CVE-2026-53137

Vulnrichment

No data.

NVD

No data.

Redhat

Severity :

Publid Date: 2026-06-25T00:00:00Z

Links: CVE-2026-53137 - Bugzilla

OpenCVE Enrichment

Updated: 2026-06-26T13:30:16Z

Weaknesses

Tracking

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object