{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63904", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.019Z", "datePublished": "2026-07-19T14:55:11.547Z", "dateUpdated": "2026-07-19T14:55:11.547Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:55:11.547Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: usbtmc: check URB actual_length for interrupt-IN notifications\n\nUSBTMC devices can use an optional interrupt endpoint for notification\nmessages. These typically contain two-byte headers indicating the\npayload format, but the driver does not check if these headers are\npresent before accessing the data buffers. In cases where the URB\nactual_length is not enough to fit these headers, the driver will either\ncause an out-of-bounds read, or consume stale leftover data from a\nprevious notification.\n\nFix by checking if actual_data contains enough bytes for the headers,\notherwise resubmit URB to the interrupt endpoint."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/class/usbtmc.c"], "versions": [{"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "e794bd67b3faf98af46f958897f6b91412c7d2a9", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "e3eec3005de44e7f37d8d7724be636446516ab42", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "ae87f505917e703ae3b487d9663d78826ff43608", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "5de7df75ef3a2756b25fe3d582a4a2970444fe5a", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "69020fa089f1bf0e1a10a15265f31b143a846409", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "75f6d3da2cc646983f41807ef98851569c12bca9", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "f141b01eaa58ac7e323931d670318aa247bff087", "status": "affected", "versionType": "git"}, {"version": "dbf3e7f654c0f06a932b8fcafac78de9d0b81d68", "lessThan": "52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd", "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/usb/class/usbtmc.c"], "versions": [{"version": "4.6", "status": "affected"}, {"version": "0", "lessThan": "4.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "4.6", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e794bd67b3faf98af46f958897f6b91412c7d2a9"}, {"url": "https://git.kernel.org/stable/c/e3eec3005de44e7f37d8d7724be636446516ab42"}, {"url": "https://git.kernel.org/stable/c/ae87f505917e703ae3b487d9663d78826ff43608"}, {"url": "https://git.kernel.org/stable/c/5de7df75ef3a2756b25fe3d582a4a2970444fe5a"}, {"url": "https://git.kernel.org/stable/c/69020fa089f1bf0e1a10a15265f31b143a846409"}, {"url": "https://git.kernel.org/stable/c/75f6d3da2cc646983f41807ef98851569c12bca9"}, {"url": "https://git.kernel.org/stable/c/f141b01eaa58ac7e323931d670318aa247bff087"}, {"url": "https://git.kernel.org/stable/c/52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd"}], "title": "usb: usbtmc: check URB actual_length for interrupt-IN notifications", "x_generator": {"engine": "bippy-1.2.0"}}}}

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