{"id":"CVE-2026-53058","state":"PUBLISHED","title":"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:\n\ndrm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()\n\nIn case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read()\nin atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit\nNULL pointer while trying to access the mutex. We need the connector to\nbe set before that. Unlike in legacy cases with flag\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised\nin bridge_attach(), so add the mhdp->connector_ptr in device structure\nto handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to\navoid possible NULL pointer dereference in recovery paths like\nmodeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set.","publishedAt":"2026-06-24T16:30:03.463Z","updatedAt":"2026-06-24T16:30:03.463Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"5302015daf26ef6b48e067f2b86c9482ac19e015","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"a3611554e599d1a24b45fd8415bacb72ce861e4b","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"1af3b42e08a957e53bab8e1897393fe0a27d9fbf","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"43d6508ddbf9fb974fbc359a033154f78c9d4c8b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]}],"references":["https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015","https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b","https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575","https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf","https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53058.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53058","state":"PUBLISHED","datePublished":"2026-06-24T16:30:03.463Z","dateUpdated":"2026-06-24T16:30:03.463Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.381Z"},"containers":{"cna":{"title":"drm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: cadence: cdns-mhdp8546-core: Set the mhdp connector earlier in atomic_enable()\n\nIn case if we get errors in cdns_mhdp_link_up() or cdns_mhdp_reg_read()\nin atomic_enable, we will go to cdns_mhdp_modeset_retry_fn() and will hit\nNULL pointer while trying to access the mutex. We need the connector to\nbe set before that. Unlike in legacy cases with flag\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, we do not have connector initialised\nin bridge_attach(), so add the mhdp->connector_ptr in device structure\nto handle both cases with DRM_BRIDGE_ATTACH_NO_CONNECTOR and\n!DRM_BRIDGE_ATTACH_NO_CONNECTOR, set it in atomic_enable() earlier to\navoid possible NULL pointer dereference in recovery paths like\nmodeset_retry_fn() with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"5302015daf26ef6b48e067f2b86c9482ac19e015","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"a3611554e599d1a24b45fd8415bacb72ce861e4b","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"1af3b42e08a957e53bab8e1897393fe0a27d9fbf","versionType":"git"},{"version":"c932ced6b58524eeb948ff252f6512cd6bcb9d9f","status":"affected","lessThan":"43d6508ddbf9fb974fbc359a033154f78c9d4c8b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"]}],"references":[{"url":"https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015"},{"url":"https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b"},{"url":"https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575"},{"url":"https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf"},{"url":"https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T16:30:03.463Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}