7.8
HIGH
CVSS 3.1
CVE-2026-53136
drm/amd/display: Clamp VBIOS HDMI retimer register count to array size
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size [Why & How] The VBIOS integrated info tables (v1_11 and v2_1) contain HdmiRegNum and Hdmi6GRegNum fields that are used as loop bounds when copying retimer I2C register settings into fixed-size arrays (dp*_ext_hdmi_reg_settings[9] and dp*_ext_hdmi_6g_reg_settings[3]). These u8 fields are not validated before use, so a malformed VBIOS can specify values up to 255, causing an out-of-bounds heap write during driver probe. Clamp each register count to the destination array size using min_t() before the copy loops, in both get_integrated_info_v11() and get_integrated_info_v2_1(). (cherry picked from commit 5a7f0ef90195940c54b0f5bb85b87da55f038c69)
Details
INFO
Published Date :
June 25, 2026, 9:16 a.m.
Last Modified :
July 7, 2026, 4:57 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
Apply kernel patch to validate retimer register counts and prevent out-of-bounds heap writes.
- Update the Linux kernel to the patched version.
- Ensure VBIOS data is validated before use.
- Apply the specific commit that clamps register counts.
- Restart the system after updating.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53136.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53136 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53136
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53136 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53136 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.94 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.13 *cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 5.15.210 Added Reference Type kernel.org: https://git.kernel.org/stable/c/029571d51140650783be4fb98fe7cb4754752086 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3f32d52ec604c659725d865cf8cc6a17a33f9c6a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4d1c3c26c2ab1842e139e61983395d64bd2e518b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5f8b39452fb16f507c9e4d8b4a83ce27e893307c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d6be8e59af412623e3d874be3a048406c0edfe60 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/fb0707ce00eef4e2d60c3020e1c0432739703e4a Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 29, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '029571d51140650783be4fb98fe7cb4754752086', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '5f8b39452fb16f507c9e4d8b4a83ce27e893307c', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '4d1c3c26c2ab1842e139e61983395d64bd2e518b', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'd6be8e59af412623e3d874be3a048406c0edfe60', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '3f32d52ec604c659725d865cf8cc6a17a33f9c6a', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'fb0707ce00eef4e2d60c3020e1c0432739703e4a', 'versionType': 'git'}, {'status': 'affected', 'version': '0', 'lessThan': '5.15.210', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.1.176', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.6.143', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.12.94', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.18.36', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '7.0.13', 'versionType': 'semver'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.94', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.36', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.13', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': '029571d51140650783be4fb98fe7cb4754752086', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': '5f8b39452fb16f507c9e4d8b4a83ce27e893307c', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': '4d1c3c26c2ab1842e139e61983395d64bd2e518b', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': 'd6be8e59af412623e3d874be3a048406c0edfe60', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': '3f32d52ec604c659725d865cf8cc6a17a33f9c6a', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': '8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117', 'versionType': 'git'}, {'status': 'affected', 'version': '1e8635ea0ea370bf4f0f2b2f1b3eb61474dd962a', 'lessThan': 'fb0707ce00eef4e2d60c3020e1c0432739703e4a', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.94', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.36', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.13', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '029571d51140650783be4fb98fe7cb4754752086', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '5f8b39452fb16f507c9e4d8b4a83ce27e893307c', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '4d1c3c26c2ab1842e139e61983395d64bd2e518b', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'd6be8e59af412623e3d874be3a048406c0edfe60', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '3f32d52ec604c659725d865cf8cc6a17a33f9c6a', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'fb0707ce00eef4e2d60c3020e1c0432739703e4a', 'versionType': 'git'}, {'status': 'affected', 'version': '0', 'lessThan': '5.15.210', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.1.176', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.6.143', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.12.94', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.18.36', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '7.0.13', 'versionType': 'semver'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.94', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.36', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.13', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size [Why & How] The VBIOS integrated info tables (v1_11 and v2_1) contain HdmiRegNum and Hdmi6GRegNum fields that are used as loop bounds when copying retimer I2C register settings into fixed-size arrays (dp*_ext_hdmi_reg_settings[9] and dp*_ext_hdmi_6g_reg_settings[3]). These u8 fields are not validated before use, so a malformed VBIOS can specify values up to 255, causing an out-of-bounds heap write during driver probe. Clamp each register count to the destination array size using min_t() before the copy loops, in both get_integrated_info_v11() and get_integrated_info_v2_1(). (cherry picked from commit 5a7f0ef90195940c54b0f5bb85b87da55f038c69) Added Reference https://git.kernel.org/stable/c/029571d51140650783be4fb98fe7cb4754752086 Added Reference https://git.kernel.org/stable/c/3f32d52ec604c659725d865cf8cc6a17a33f9c6a Added Reference https://git.kernel.org/stable/c/4d1c3c26c2ab1842e139e61983395d64bd2e518b Added Reference https://git.kernel.org/stable/c/5f8b39452fb16f507c9e4d8b4a83ce27e893307c Added Reference https://git.kernel.org/stable/c/8aaa7e317fbd4beb9c6a9f77aa4cf52fae78b117 Added Reference https://git.kernel.org/stable/c/d6be8e59af412623e3d874be3a048406c0edfe60 Added Reference https://git.kernel.org/stable/c/fb0707ce00eef4e2d60c3020e1c0432739703e4a
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.