CVE-2026-68256

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68256", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.378Z", "datePublished": "2026-08-10T12:01:26.406Z", "dateUpdated": "2026-08-17T05:01:47.968Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:01:47.968Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n returns false without releasing prev_sink. All other return paths in the\n function correctly call dc_sink_release(prev_sink), making this the only\n missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)"}], "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/dc/link/link_detection.c"], "versions": [{"version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "lessThan": "f9922828a4ebd26286fbe0286cc61695e7d9b07b", "status": "affected", "versionType": "git"}, {"version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "lessThan": "a59e493567d18ef3858be9368acd132a01ebfa09", "status": "affected", "versionType": "git"}, {"version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "lessThan": "4ee77643e6194f2deb62fe62f04396f9825e27d8", "status": "affected", "versionType": "git"}, {"version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "lessThan": "58ea24dd96848626039296e9e8510270ec8dc4bf", "status": "affected", "versionType": "git"}, {"version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "lessThan": "a6e14b976be48eebd8769cb5b883a6af7fc5ade1", "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/dc/link/link_detection.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "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": "6.3", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"}, {"url": "https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09"}, {"url": "https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8"}, {"url": "https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf"}, {"url": "https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1"}], "title": "drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_detection.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f9922828a4ebd26286fbe0286cc61695e7d9b07b", "status": "affected", "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "versionType": "git"}, {"lessThan": "a59e493567d18ef3858be9368acd132a01ebfa09", "status": "affected", "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "versionType": "git"}, {"lessThan": "4ee77643e6194f2deb62fe62f04396f9825e27d8", "status": "affected", "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "versionType": "git"}, {"lessThan": "58ea24dd96848626039296e9e8510270ec8dc4bf", "status": "affected", "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "versionType": "git"}, {"lessThan": "a6e14b976be48eebd8769cb5b883a6af7fc5ade1", "status": "affected", "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_detection.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.3"}, {"lessThan": "6.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "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: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n returns false without releasing prev_sink. All other return paths in the\n function correctly call dc_sink_release(prev_sink), making this the only\n missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)"}], "id": "CVE-2026-68256", "lastModified": "2026-08-17T05:18:27.913", "metrics": {}, "published": "2026-08-10T13:20:14.250", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: drm/amd/display memory leak in DP alt mode timeout path", "id": "2513298", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513298"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\nprev_sink is unconditionally retained via dc_sink_retain at function\nentry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\nreturns false without releasing prev_sink. All other return paths in the\nfunction correctly call dc_sink_release(prev_sink), making this the only\nmissing cleanup.\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)", "A flaw was found in the `drm/amd/display` component of the Linux kernel. This issue occurs in the `detect_link_and_local_sink` function, where a `prev_sink` reference is not properly released if the DisplayPort (DP) alt mode timeout path returns false. This missing cleanup can lead to a memory leak, potentially resulting in a Denial of Service (DoS) due to resource exhaustion."], "name": "CVE-2026-68256", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:01:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68256\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68256\nhttps://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8\nhttps://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf\nhttps://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09\nhttps://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1\nhttps://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54618888d1ea7a26f8bccfb89e3c2420350c8047,f9922828a4ebd26286fbe0286cc61695e7d9b07b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54618888d1ea7a26f8bccfb89e3c2420350c8047,a59e493567d18ef3858be9368acd132a01ebfa09)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54618888d1ea7a26f8bccfb89e3c2420350c8047,4ee77643e6194f2deb62fe62f04396f9825e27d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54618888d1ea7a26f8bccfb89e3c2420350c8047,58ea24dd96848626039296e9e8510270ec8dc4bf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[54618888d1ea7a26f8bccfb89e3c2420350c8047,a6e14b976be48eebd8769cb5b883a6af7fc5ade1)"}}], "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": "affected", "versions": {"scheme": "generic", "value": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "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": "2026-08-10T19:45:04.447512+00:00", "title": "Kernel Driver Leak Causing Potential Resource Exhaustion in AMD DRM Display Module", "updated": "2026-08-13T05:00:10.885580+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-401", "CWE-772"]}