CVE-2026-31524

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Switch to\ndevm_kzalloc() to ensure the memory is managed and freed automatically\nwhen the device is removed.\n\nThe caller of report_fixup() does not take ownership of the returned\npointer, but it is permitted to return a pointer whose lifetime is at\nleast that of the input buffer.\n\nAlso fix a harmless out-of-bounds read by copying only the original\ndescriptor size."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hid/hid-asus.c"], "versions": [{"version": "5703e52cc711bc01e72cf12b86a126909c79d213", "lessThan": "726765b43deb2b4723869d673cc5fc6f7a3b2059", "status": "affected", "versionType": "git"}, {"version": "5703e52cc711bc01e72cf12b86a126909c79d213", "lessThan": "ede95cfcab8064d9a08813fbd7ed42cea8843dcf", "status": "affected", "versionType": "git"}, {"version": "5703e52cc711bc01e72cf12b86a126909c79d213", "lessThan": 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"https://git.kernel.org/stable/c/84724ac4821a160d47b84289adf139023027bdbb"}, {"url": "https://git.kernel.org/stable/c/2bad24c17742fc88973d6aea526ce1353f5334a3"}], "title": "HID: asus: avoid memory leak in asus_report_fixup()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-31524", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T21:37:29.086575Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T21:45:06.026Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hid/hid-asus.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "726765b43deb2b4723869d673cc5fc6f7a3b2059", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "ede95cfcab8064d9a08813fbd7ed42cea8843dcf", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "2e4fe6b15c2f390c023b20d728b1a3fe7ea4f973", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "f20f17cffbe34fb330267e0f8084f5565f807444", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "7a6d6e4d8af044f94fa97e97af5ff2771e1fbebd", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "a41cc7c1668e44ff2c2d36f9a6353253ffc43e3c", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "84724ac4821a160d47b84289adf139023027bdbb", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}, {"lessThan": "2bad24c17742fc88973d6aea526ce1353f5334a3", "status": "affected", "version": "5703e52cc711bc01e72cf12b86a126909c79d213", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hid/hid-asus.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.14"}, {"lessThan": "4.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.253", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.203", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.168", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.131", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.80", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.21", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.11", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7144BCBC-124B-49FA-8BCC-259910F77E5A", "versionEndExcluding": "5.10.253", "versionStartIncluding": "4.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E2DDDCA1-6DAB-4018-B920-8F045DDD8D3B", "versionEndExcluding": "6.1.168", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CE6ED4D4-0046-4573-BFA9-D64143B6A89F", "versionEndExcluding": "6.6.131", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "97EB19EC-A11E-49C6-9D2F-6F6EC6CB98B6", "versionEndExcluding": "6.12.80", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ED39847A-3B46-4729-B7CA-B2C30B9FA8FE", "versionEndExcluding": "6.18.21", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4CA2E747-A9EC-4518-9AA2-B4247FC748B7", "versionEndExcluding": "6.19.11", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: asus: avoid memory leak in asus_report_fixup()\n\nThe asus_report_fixup() function was returning a newly allocated\nkmemdup()-allocated buffer, but never freeing it. Switch to\ndevm_kzalloc() to ensure the memory is managed and freed automatically\nwhen the device is removed.\n\nThe caller of report_fixup() does not take ownership of the returned\npointer, but it is permitted to return a pointer whose lifetime is at\nleast that of the input buffer.\n\nAlso fix a harmless out-of-bounds read by copying only the original\ndescriptor size."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nHID: asus: evitar fuga de memoria en asus_report_fixup()\n\nLa funci\u00f3n asus_report_fixup() estaba devolviendo un b\u00fafer reci\u00e9n asignado con kmemdup(), pero nunca lo liberaba. Cambiar a devm_kzalloc() para asegurar que la memoria se gestione y libere autom\u00e1ticamente cuando el dispositivo es retirado.\n\nEl llamador de report_fixup() no toma posesi\u00f3n del puntero devuelto, pero se permite devolver un puntero cuya vida \u00fatil sea al menos la del b\u00fafer de entrada.\n\nTambi\u00e9n se corrige una lectura fuera de l\u00edmites inofensiva copiando solo el tama\u00f1o original del descriptor."}], "id": "CVE-2026-31524", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31524", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T21:37:29.086575Z", "version": "2.0.3"}}]}, "published": "2026-04-22T14:16:52.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2bad24c17742fc88973d6aea526ce1353f5334a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e4fe6b15c2f390c023b20d728b1a3fe7ea4f973"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/726765b43deb2b4723869d673cc5fc6f7a3b2059"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7a6d6e4d8af044f94fa97e97af5ff2771e1fbebd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/84724ac4821a160d47b84289adf139023027bdbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a41cc7c1668e44ff2c2d36f9a6353253ffc43e3c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ede95cfcab8064d9a08813fbd7ed42cea8843dcf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f20f17cffbe34fb330267e0f8084f5565f807444"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: HID: asus: avoid memory leak in asus_report_fixup()", "id": "2460631", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460631"}, "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-763", "details": ["A flaw was found in the Linux kernel's Human Interface Device (HID) subsystem, specifically within the ASUS HID driver. The `asus_report_fixup()` function did not properly manage allocated memory, resulting in a memory leak (CWE-401). This issue could allow a local attacker to consume system resources, potentially leading to a denial of service. A minor out-of-bounds read (CWE-125) was also identified, though it is considered harmless."], "name": "CVE-2026-31524", "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": "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": "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"}], "public_date": "2026-04-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31524\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31524\nhttps://lore.kernel.org/linux-cve-announce/2026042213-CVE-2026-31524-3f28@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,726765b43deb2b4723869d673cc5fc6f7a3b2059)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ede95cfcab8064d9a08813fbd7ed42cea8843dcf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2e4fe6b15c2f390c023b20d728b1a3fe7ea4f973)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f20f17cffbe34fb330267e0f8084f5565f807444)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7a6d6e4d8af044f94fa97e97af5ff2771e1fbebd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a41cc7c1668e44ff2c2d36f9a6353253ffc43e3c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,84724ac4821a160d47b84289adf139023027bdbb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2bad24c17742fc88973d6aea526ce1353f5334a3)"}}], "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": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.168,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.131,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.80,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.21,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.11,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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"}], "analysis": {"en": {"generated_at": "2026-04-28T23:56:12.447763+00:00", "value": {"mitigation_remediation": ["Update the system\u2019s Linux kernel to a version that includes the fixed ASUS HID driver code. This is the official vendor patch and will automatically free the allocated memory using devm_kzalloc and bound the descriptor copy.", "Reboot the machine after the kernel upgrade so the updated kernel and driver are loaded. This ensures any previously allocated buffers are reclaimed, preventing further leak accumulation.", "Verify that the ASUS HID driver is functioning correctly and monitor system memory usage for abnormal growth; consider disabling or removing the driver for ASUS devices that are not required to reduce blast radius while awaiting an official patch or upgrade."], "summary": {"action": "Apply Patch", "impact": "Memory leak and out\u2011of\u2011bounds read"}, "threat_synthesis": {"affected_systems": "The issue affects the Linux kernel, specifically the ASUS HID driver implementation. No specific kernel release versions are cited in the advisory, so any installation of the kernel containing the unpatched asus HID driver is potentially vulnerable.", "description_and_impact": "The asus_report_fixup() function in the Linux kernel HID driver creates a buffer with kmemdup() but never frees it, leading to a memory leak that can grow the kernel\u2019s memory usage over time. Additionally, the code copies data from the HID descriptor without necessarily matching the descriptor\u2019s actual size, allowing an out\u2011of\u2011bounds read that could expose sensitive kernel memory contents. The vulnerability exploits improper memory management and bounds checking and could degrade system availability or reveal confidential information.", "risk_and_exploitability": "Based on the description, it is inferred that the flaw resides in kernel code, so it requires local execution of privileged code to trigger the memory allocation path. The CVSS score is 5.5 and the EPSS score is <1%, indicating a moderate severity with very low exploitation probability, and the vulnerability is not listed in the CISA KEV catalog. However, a persistent memory leak can impact long\u2011term stability, and an out\u2011of\u2011bounds read could lead to information disclosure if an attacker can craft HID descriptors to be processed by the kernel."}}}}, "created": "2026-04-22T18:45:23.765238+00:00", "updated": "2026-04-29T00:00:13.841234+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}