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A malicious HDMI repeater could advertise a message\nsize larger than the buffer, causing an out-of-bounds write during the\nI2C read.\n\nClamp the read length in mod_hdcp_read_rx_id_list() to the size of the\nrx_id_list buffer, matching the approach already used in the DP branch.\n\n(cherry picked from commit 229212219e4247d9486f8ba41ef087358490be09)"}], "id": "CVE-2026-53137", "lastModified": "2026-07-07T16:51:48.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-06-25T09:16:31.030", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1906064d50d194a145486e5caf3db3e708b6f6ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3c4444aec06c74fbc05661f370954ac814963c38"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/79e0273272a05fb26f9b1e55bf1a52eefc3b7b35"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91fb41218c413989d8b6c837748751454b452d68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/964e50ef7b8f09815a7d05b8326af700f8d5bc96"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/98cfb7530ea91d8e5e928285cdce58e1131f6e83"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bfba882cfcd08f6540f72f48e786b6404f5d2c5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f0f3981c43b32cadfe373d636d9e9ca522bb3702"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size", "id": "2492714", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492714"}, "csaw": false, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's drm/amd/display component. A malicious HDMI repeater could exploit this vulnerability during HDCP 2.x repeater authentication by sending a message size larger than the allocated buffer. This could lead to an out-of-bounds write, potentially causing a denial of service or other unpredictable system behavior."], "name": "CVE-2026-53137", "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"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53137\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53137\nhttps://lore.kernel.org/linux-cve-announce/2026062543-CVE-2026-53137-e711@gregkh/T"]}

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