CVE-2026-53058
drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()
Description
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable() In case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read() in atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit NULL pointer while trying to access the mutex. We need the connector to be set before that. Unlike in legacy cases with flag !DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised in bridge_attach(), so add the mhdp->connector_ptr in device structure to handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and !DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to avoid possible NULL pointer dereference in recovery paths like modeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 21, 2026, 5:29 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel.
- Ensure connector pointer is set before recovery paths.
- Apply the patch for cdns-mhdp8546-core.
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-2026-53058.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53058 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53058
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-2026-53058 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53058 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. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6 up to (excluding) 6.6.141 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 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': 'c932ced6b58524eeb948ff252f6512cd6bcb9d9f', 'lessThan': '5302015daf26ef6b48e067f2b86c9482ac19e015', 'versionType': 'git'}, {'status': 'affected', 'version': 'c932ced6b58524eeb948ff252f6512cd6bcb9d9f', 'lessThan': 'a3611554e599d1a24b45fd8415bacb72ce861e4b', 'versionType': 'git'}, {'status': 'affected', 'version': 'c932ced6b58524eeb948ff252f6512cd6bcb9d9f', 'lessThan': 'cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575', 'versionType': 'git'}, {'status': 'affected', 'version': 'c932ced6b58524eeb948ff252f6512cd6bcb9d9f', 'lessThan': '1af3b42e08a957e53bab8e1897393fe0a27d9fbf', 'versionType': 'git'}, {'status': 'affected', 'version': 'c932ced6b58524eeb948ff252f6512cd6bcb9d9f', 'lessThan': '43d6508ddbf9fb974fbc359a033154f78c9d4c8b', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c', 'drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h', 'drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-hdcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c', 'drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h', 'drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-hdcp.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable() In case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read() in atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit NULL pointer while trying to access the mutex. We need the connector to be set before that. Unlike in legacy cases with flag !DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised in bridge_attach(), so add the mhdp->connector_ptr in device structure to handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and !DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to avoid possible NULL pointer dereference in recovery paths like modeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set. Added Reference https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf Added Reference https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b Added Reference https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015 Added Reference https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b Added Reference https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575