CVE-2026-43051

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A maliciously crafted short report\ncan trigger an out-of-bounds read when copying data into the wacom\nstructure.\n\nSpecifically, report 0x03 requires at least 22 bytes to safely read\nthe processed data and battery status, while report 0x04 (which\nfalls through to 0x03) requires 32 bytes.\n\nAdd explicit length checks for these report IDs and log a warning if\na short report is received."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable handler processes Bluetooth HID input reports from Wacom Intuos wireless devices, so an attacker must be within Bluetooth radio range or control a Bluetooth HID peripheral.\nAC:L - The attacker directly controls the report ID and report length; a short 0x03 or 0x04 report deterministically reaches the missing bounds checks once the HIDP session exists.\nPR:N - The attacker is the Bluetooth HID peer sending input reports and needs no local kernel privileges. The local HIDP setup path uses CAP_NET_ADMIN, but that is a host-side management gate, not a privilege required by the remote reporting device.\nUI:N - No victim action is needed to trigger the bug after the malicious or compromised Bluetooth HID device is connected; it can send the crafted input report on its own.\nS:U - The vulnerable Wacom HID driver and the impacted kernel/input state are under the same host kernel security authority.\nC:H - The bug reads beyond a kmemdup() report buffer and copies adjacent kernel heap bytes into Wacom report processing state. Because this is a kernel heap out-of-bounds read of up to the 32-byte report window, high confidentiality impact is the highest defensible assessment.\nI:N - The defect is an out-of-bounds read, not an out-of-bounds write or use-after-free, and it does not provide an attacker-controlled kernel memory modification primitive.\nA:H - Malformed short reports can repeatedly trigger kernel out-of-bounds reads; on hardened/debug configurations this is a KASAN-detected kernel fault, and on production systems it is defensible to treat repeated invalid kernel memory access as a potential crash."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hid/wacom_wac.c"], "versions": [{"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "5b5b9730111808410e404ceac2fabd32eef92fbd", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "fa8901cb1f0b2113a342db93bd5684b59fe99dcf", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "8bd690ac1242332c73cba10dacdad6c6642bbb94", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "41026bcc0fdf82605205c27935ef719cbc07193b", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "c8dc23c97680eebefde06da5858aaef1b37cf75d", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "3d78386b144453c47e81bf62dc3601b757f02d99", "status": "affected", "versionType": "git"}, {"version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "2f1763f62909ccb6386ac50350fa0abbf5bb16a9", "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/hid/wacom_wac.c"], "versions": [{"version": "3.3", "status": "affected"}, {"version": "0", "lessThan": "3.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "3.3", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.6.134"}, {"vulnerable": true, "criteria": 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{"url": "https://git.kernel.org/stable/c/c8dc23c97680eebefde06da5858aaef1b37cf75d"}, {"url": "https://git.kernel.org/stable/c/3d78386b144453c47e81bf62dc3601b757f02d99"}, {"url": "https://git.kernel.org/stable/c/2f1763f62909ccb6386ac50350fa0abbf5bb16a9"}], "title": "HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43051", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:14:00.224091Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T19:06:11.476Z"}}]}}

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The local HIDP setup path uses CAP_NET_ADMIN, but that is a host-side management gate, not a privilege required by the remote reporting device.\nUI:N - No victim action is needed to trigger the bug after the malicious or compromised Bluetooth HID device is connected; it can send the crafted input report on its own.\nS:U - The vulnerable Wacom HID driver and the impacted kernel/input state are under the same host kernel security authority.\nC:H - The bug reads beyond a kmemdup() report buffer and copies adjacent kernel heap bytes into Wacom report processing state. Because this is a kernel heap out-of-bounds read of up to the 32-byte report window, high confidentiality impact is the highest defensible assessment.\nI:N - The defect is an out-of-bounds read, not an out-of-bounds write or use-after-free, and it does not provide an attacker-controlled kernel memory modification primitive.\nA:H - Malformed short reports can repeatedly trigger kernel out-of-bounds reads; on hardened/debug configurations this is a KASAN-detected kernel fault, and on production systems it is defensible to treat repeated invalid kernel memory access as a potential crash."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "5b5b9730111808410e404ceac2fabd32eef92fbd", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "fa8901cb1f0b2113a342db93bd5684b59fe99dcf", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "8bd690ac1242332c73cba10dacdad6c6642bbb94", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "41026bcc0fdf82605205c27935ef719cbc07193b", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "c8dc23c97680eebefde06da5858aaef1b37cf75d", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "3d78386b144453c47e81bf62dc3601b757f02d99", "versionType": "git"}, {"status": "affected", "version": "78761ff9bc4e944e0b4e5df1e7eedcfdbb1a9a1a", "lessThan": "2f1763f62909ccb6386ac50350fa0abbf5bb16a9", "versionType": "git"}], "programFiles": ["drivers/hid/wacom_wac.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.3"}, {"status": "unaffected", "version": "0", "lessThan": "3.3", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.168", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.134", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.81", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.22", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.12", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/hid/wacom_wac.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada"}, {"url": "https://git.kernel.org/stable/c/5b5b9730111808410e404ceac2fabd32eef92fbd"}, {"url": "https://git.kernel.org/stable/c/fa8901cb1f0b2113a342db93bd5684b59fe99dcf"}, {"url": "https://git.kernel.org/stable/c/8bd690ac1242332c73cba10dacdad6c6642bbb94"}, {"url": "https://git.kernel.org/stable/c/41026bcc0fdf82605205c27935ef719cbc07193b"}, {"url": "https://git.kernel.org/stable/c/c8dc23c97680eebefde06da5858aaef1b37cf75d"}, {"url": "https://git.kernel.org/stable/c/3d78386b144453c47e81bf62dc3601b757f02d99"}, {"url": "https://git.kernel.org/stable/c/2f1763f62909ccb6386ac50350fa0abbf5bb16a9"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq\n\nThe wacom_intuos_bt_irq() function processes Bluetooth HID reports\nwithout sufficient bounds checking. A maliciously crafted short report\ncan trigger an out-of-bounds read when copying data into the wacom\nstructure.\n\nSpecifically, report 0x03 requires at least 22 bytes to safely read\nthe processed data and battery status, while report 0x04 (which\nfalls through to 0x03) requires 32 bytes.\n\nAdd explicit length checks for these report IDs and log a warning if\na short report is received."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.253", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.203", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.168", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.134", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.81", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.22", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.12", "versionStartIncluding": "3.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "3.3"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:25:34.976Z"}}}, "cveMetadata": {"cveId": "CVE-2026-43051", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:06:11.476Z", "dateReserved": "2026-05-01T14:12:55.980Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-01T14:15:45.314Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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out-of-bounds read in wacom_intuos_bt_irq\n\nThe wacom_intuos_bt_irq() function processes Bluetooth HID reports\nwithout sufficient bounds checking. A maliciously crafted short report\ncan trigger an out-of-bounds read when copying data into the wacom\nstructure.\n\nSpecifically, report 0x03 requires at least 22 bytes to safely read\nthe processed data and battery status, while report 0x04 (which\nfalls through to 0x03) requires 32 bytes.\n\nAdd explicit length checks for these report IDs and log a warning if\na short report is received."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nHID: wacom: corregir lectura fuera de l\u00edmites en wacom_intuos_bt_irq\n\nLa funci\u00f3n wacom_intuos_bt_irq() procesa informes HID de Bluetooth sin una comprobaci\u00f3n de l\u00edmites suficiente. Un informe corto dise\u00f1ado maliciosamente puede desencadenar una lectura fuera de l\u00edmites al copiar datos en la estructura wacom.\n\nEspec\u00edficamente, el informe 0x03 requiere al menos 22 bytes para leer de forma segura los datos procesados y el estado de la bater\u00eda, mientras que el informe 0x04 (que pasa a 0x03) requiere 32 bytes.\n\nA\u00f1adir comprobaciones de longitud expl\u00edcitas para estos ID de informe y registrar una advertencia si se recibe un informe corto."}], "id": "CVE-2026-43051", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43051", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:14:00.224091Z", "version": "2.0.3"}}]}, "published": "2026-05-01T15:16:51.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2f1763f62909ccb6386ac50350fa0abbf5bb16a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3d78386b144453c47e81bf62dc3601b757f02d99"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/41026bcc0fdf82605205c27935ef719cbc07193b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b5b9730111808410e404ceac2fabd32eef92fbd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8bd690ac1242332c73cba10dacdad6c6642bbb94"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c8dc23c97680eebefde06da5858aaef1b37cf75d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fa8901cb1f0b2113a342db93bd5684b59fe99dcf"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq", "id": "2464462", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464462"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's Wacom Human Interface Device (HID) driver. This vulnerability allows a remote attacker to trigger an out-of-bounds read by sending a specially crafted, short Bluetooth HID report. This can lead to the disclosure of sensitive information from the system's memory."], "name": "CVE-2026-43051", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43051\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43051\nhttps://lore.kernel.org/linux-cve-announce/2026050107-CVE-2026-43051-0d15@gregkh/T"], "threat_severity": "Important"}

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