{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74460", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.901Z", "datePublished": "2026-08-15T12:27:01.274Z", "dateUpdated": "2026-08-19T16:36:57.996Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:36:57.996Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/can/usb/ems_usb.c"], "versions": [{"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "db5655287d78f00daf98888a520bb8da4d30126d", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "ce8125566b1d0b0f16449407e014addf451804ea", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "0b9090717c7e2184e2c427bbcc752f295116ac1d", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "0b23144c59c126beb4a7761a85a194ae0fe668a5", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "df3ac2a672a5284441f120d486acabdd6740fc2a", "status": "affected", "versionType": "git"}, {"version": "702171adeed3607ee9603ec30ce081411e36ae42", "lessThan": "02925f51377f2a42a6724f00549167499c9302e5", "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/net/can/usb/ems_usb.c"], "versions": [{"version": "2.6.32", "status": "affected"}, {"version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "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": "2.6.32", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"}, {"url": "https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"}, {"url": "https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"}, {"url": "https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"}, {"url": "https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"}, {"url": "https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"}, {"url": "https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"}], "title": "can: ems_usb: validate CPC message lengths", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/can/usb/ems_usb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "db5655287d78f00daf98888a520bb8da4d30126d", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "ce8125566b1d0b0f16449407e014addf451804ea", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "0b9090717c7e2184e2c427bbcc752f295116ac1d", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "0b23144c59c126beb4a7761a85a194ae0fe668a5", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "df3ac2a672a5284441f120d486acabdd6740fc2a", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}, {"lessThan": "02925f51377f2a42a6724f00549167499c9302e5", "status": "affected", "version": "702171adeed3607ee9603ec30ce081411e36ae42", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/can/usb/ems_usb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.32"}, {"lessThan": "2.6.32", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "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\ncan: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers."}], "id": "CVE-2026-74460", "lastModified": "2026-08-19T17:21:02.950", "metrics": {}, "published": "2026-08-15T13:17:50.663", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: can: ems_usb: validate CPC message lengths", "id": "2517066", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517066"}, "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-130", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncan: ems_usb: validate CPC message lengths\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers.", "A flaw was found in the Linux kernel's `ems_usb` module. This vulnerability occurs because the `ems_usb_read_bulk_callback()` function, which processes Controller Area Network (CAN) Protocol Converter (CPC) messages from a USB receive buffer, does not properly validate the lengths of these messages. An attacker could exploit this by sending specially crafted CPC messages, potentially leading to a denial of service due to a format error when processing the malformed data."], "name": "CVE-2026-74460", "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"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74460\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74460\nhttps://lore.kernel.org/linux-cve-announce/2026081532-CVE-2026-74460-0f76@gregkh/T"], "threat_severity": "Moderate"}