CVE-2026-68364

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68364", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.385Z", "datePublished": "2026-08-10T12:03:41.385Z", "dateUpdated": "2026-08-18T06:55:58.239Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-18T06:55:58.239Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix ISM dc_lock deadlock during suspend\n\n[Why]\nSystem hang observed during suspend/resume while video is playing.\namdgpu_dm_ism_disable() is called under dc_lock and waits for ISM\ndelayed work via disable_delayed_work_sync(). The work handlers\nthemselves take dc_lock, producing an ABBA deadlock when a worker is\nin flight at suspend time.\n\n[How]\nSplit the disable path into two phases with opposite locking\ncontracts:\n 1. amdgpu_dm_ism_disable() -- quiesces workers, must NOT hold\n dc_lock.\n 2. amdgpu_dm_ism_force_full_power() (new) -- drives the ISM FSM\n back to FULL_POWER_RUNNING, must hold dc_lock."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.h"], "versions": [{"version": "754003486c3cc95f2fcb9d6b71a779047d6db95c", "lessThan": "95776812e6b8f908563e8994d5d947b68baf68a6", "status": "affected", "versionType": "git"}, {"version": "754003486c3cc95f2fcb9d6b71a779047d6db95c", "lessThan": "3714fe242592e3699ac5e2c19d68b275a210be7d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.h"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6"}, {"url": "https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d"}], "title": "drm/amd/display: Fix ISM dc_lock deadlock during suspend", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "95776812e6b8f908563e8994d5d947b68baf68a6", "status": "affected", "version": "754003486c3cc95f2fcb9d6b71a779047d6db95c", "versionType": "git"}, {"lessThan": "3714fe242592e3699ac5e2c19d68b275a210be7d", "status": "affected", "version": "754003486c3cc95f2fcb9d6b71a779047d6db95c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.c", "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_ism.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix ISM dc_lock deadlock during suspend\n\n[Why]\nSystem hang observed during suspend/resume while video is playing.\namdgpu_dm_ism_disable() is called under dc_lock and waits for ISM\ndelayed work via disable_delayed_work_sync(). The work handlers\nthemselves take dc_lock, producing an ABBA deadlock when a worker is\nin flight at suspend time.\n\n[How]\nSplit the disable path into two phases with opposite locking\ncontracts:\n 1. amdgpu_dm_ism_disable() -- quiesces workers, must NOT hold\n dc_lock.\n 2. amdgpu_dm_ism_force_full_power() (new) -- drives the ISM FSM\n back to FULL_POWER_RUNNING, must hold dc_lock."}], "id": "CVE-2026-68364", "lastModified": "2026-08-18T07:16:51.693", "metrics": {}, "published": "2026-08-10T13:20:29.010", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: AMD display driver deadlock leads to system hang", "id": "2513268", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513268"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: Fix ISM dc_lock deadlock during suspend\n[Why]\nSystem hang observed during suspend/resume while video is playing.\namdgpu_dm_ism_disable() is called under dc_lock and waits for ISM\ndelayed work via disable_delayed_work_sync(). The work handlers\nthemselves take dc_lock, producing an ABBA deadlock when a worker is\nin flight at suspend time.\n[How]\nSplit the disable path into two phases with opposite locking\ncontracts:\n1. amdgpu_dm_ism_disable() -- quiesces workers, must NOT hold\ndc_lock.\n2. amdgpu_dm_ism_force_full_power() (new) -- drives the ISM FSM\nback to FULL_POWER_RUNNING, must hold dc_lock.", "A flaw was found in the `drm/amd/display` component of the Linux kernel. A deadlock can occur during system suspend and resume operations when video is actively playing. This issue arises due to conflicting locking mechanisms within the display driver, where a function attempting to disable a component waits for delayed work that itself tries to acquire the same lock. This can lead to a system hang, resulting in a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-68364", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:03:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68364\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68364\nhttps://git.kernel.org/stable/c/3714fe242592e3699ac5e2c19d68b275a210be7d\nhttps://git.kernel.org/stable/c/95776812e6b8f908563e8994d5d947b68baf68a6"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,95776812e6b8f908563e8994d5d947b68baf68a6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,3714fe242592e3699ac5e2c19d68b275a210be7d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.1.6)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T15:45:03.651597+00:00", "updated": "2026-08-13T06:00:04.714598+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}