{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74603", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.919Z", "datePublished": "2026-08-22T15:31:51.544Z", "dateUpdated": "2026-08-25T05:40:27.399Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-25T05:40:27.399Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: ocp: Fix board ID over-read\n\nThe EEPROM board ID is a fixed 13-byte field and is not guaranteed to\ncontain a NUL terminator. Passing it directly to\ndevlink_info_version_fixed_put() treats it as a C string and may read\nbeyond the field.\n\nFormat at most OCP_BOARD_ID_LEN bytes into the existing local buffer\nbefore reporting the ID. Use a precision limit because the snprintf()\noutput size alone does not bound the source string scan."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is reached only through the devlink generic-netlink interface (DEVLINK_CMD_INFO_GET) via a local socket; ptp_ocp is a PCI PTP timecard driver with no network, Bluetooth, or physical-device input path to ptp_ocp_devlink_info_get().\nAC:L - On a system with a probed OCP timecard, issuing devlink info deterministically calls ptp_ocp_devlink_info_get() and passes the 13-byte EEPROM board_id that is not guaranteed to be NUL-terminated, so the over-read is reliably triggered without races or attacker-uncontrollable layout.\nPR:L - DEVLINK_CMD_INFO_GET is registered with only GENL_CMD_CAP_DO/GENL_CMD_CAP_DUMP and no GENL_ADMIN_PERM, and devlink_nl_pre_doit() adds no capability check, so any unprivileged local user with generic netlink access can invoke the vulnerable handler.\nUI:N - Exploitation requires only the attacker issuing a devlink info netlink request; no administrator or other user action is needed beyond the attacker having local access to the host.\nS:U - Kernel memory disclosure and any resulting crash are confined to the same host kernel; the bug does not cross VM, IOMMU, or sandbox security boundaries.\nC:H - Passing the non-NUL-terminated board_id to devlink_info_version_fixed_put() makes devlink_info_version_put() and nla_put_string() use strlen(), reading past the 13-byte field through adjacent ptp_ocp/devlink private memory and returning leaked bytes in the netlink reply to the caller.\nI:N - The defect is purely an out-of-bounds kernel read with no write, heap corruption, or control-flow hijack primitive; only kernel memory is scanned and copied into the netlink response.\nA:H - strlen() on the unterminated board_id can walk through subsequent kmalloc-backed struct fields and potentially past the devlink private allocation, touching unmapped pages and oopsing/panicking the kernel; an unprivileged user can repeat the devlink info query to retrigger it."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/ptp/ptp_ocp.c"], "versions": [{"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "72ef3ce80078199bfad32f98d055f44ba7cd0c3d", "status": "affected", "versionType": "git"}, {"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "3d965811be78473654e6e8cc8e4fb7b6b87aa6c1", "status": "affected", "versionType": "git"}, {"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "f92558bbe78d6284fedd053900f82a70f0aa8707", "status": "affected", "versionType": "git"}, {"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "5fd91dd4a143479b0575fb1f202ec1c501e71fd5", "status": "affected", "versionType": "git"}, {"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "f8d7e5751267637190eff887c971d5b468106213", "status": "affected", "versionType": "git"}, {"version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "lessThan": "6b69f2ef10cdb018c0b127a7cab88e590bbddba4", "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/ptp/ptp_ocp.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.152", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "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": "5.18", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/72ef3ce80078199bfad32f98d055f44ba7cd0c3d"}, {"url": "https://git.kernel.org/stable/c/3d965811be78473654e6e8cc8e4fb7b6b87aa6c1"}, {"url": "https://git.kernel.org/stable/c/f92558bbe78d6284fedd053900f82a70f0aa8707"}, {"url": "https://git.kernel.org/stable/c/5fd91dd4a143479b0575fb1f202ec1c501e71fd5"}, {"url": "https://git.kernel.org/stable/c/f8d7e5751267637190eff887c971d5b468106213"}, {"url": "https://git.kernel.org/stable/c/6b69f2ef10cdb018c0b127a7cab88e590bbddba4"}], "title": "ptp: ocp: Fix board ID over-read", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/ptp/ptp_ocp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "72ef3ce80078199bfad32f98d055f44ba7cd0c3d", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}, {"lessThan": "3d965811be78473654e6e8cc8e4fb7b6b87aa6c1", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}, {"lessThan": "f92558bbe78d6284fedd053900f82a70f0aa8707", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}, {"lessThan": "5fd91dd4a143479b0575fb1f202ec1c501e71fd5", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}, {"lessThan": "f8d7e5751267637190eff887c971d5b468106213", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}, {"lessThan": "6b69f2ef10cdb018c0b127a7cab88e590bbddba4", "status": "affected", "version": "0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/ptp/ptp_ocp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.18"}, {"lessThan": "5.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "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\nptp: ocp: Fix board ID over-read\n\nThe EEPROM board ID is a fixed 13-byte field and is not guaranteed to\ncontain a NUL terminator. Passing it directly to\ndevlink_info_version_fixed_put() treats it as a C string and may read\nbeyond the field.\n\nFormat at most OCP_BOARD_ID_LEN bytes into the existing local buffer\nbefore reporting the ID. Use a precision limit because the snprintf()\noutput size alone does not bound the source string scan."}], "id": "CVE-2026-74603", "lastModified": "2026-08-25T06:18:36.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-22T16:16:32.750", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d965811be78473654e6e8cc8e4fb7b6b87aa6c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5fd91dd4a143479b0575fb1f202ec1c501e71fd5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6b69f2ef10cdb018c0b127a7cab88e590bbddba4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72ef3ce80078199bfad32f98d055f44ba7cd0c3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f8d7e5751267637190eff887c971d5b468106213"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f92558bbe78d6284fedd053900f82a70f0aa8707"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ptp: ocp: Fix board ID over-read", "id": "2521422", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521422"}, "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-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nptp: ocp: Fix board ID over-read\nThe EEPROM board ID is a fixed 13-byte field and is not guaranteed to\ncontain a NUL terminator. Passing it directly to\ndevlink_info_version_fixed_put() treats it as a C string and may read\nbeyond the field.\nFormat at most OCP_BOARD_ID_LEN bytes into the existing local buffer\nbefore reporting the ID. Use a precision limit because the snprintf()\noutput size alone does not bound the source string scan.", "A flaw was found in the Linux kernel's ptp: ocp module. This vulnerability occurs because the EEPROM board ID, a fixed-size field, is not guaranteed to be null-terminated. When this ID is processed as a C string, it may lead to an over-read beyond its intended memory boundary. This memory corruption could result in information disclosure."], "name": "CVE-2026-74603", "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": "2026-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74603\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74603\nhttps://lore.kernel.org/linux-cve-announce/2026082215-CVE-2026-74603-955f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,72ef3ce80078199bfad32f98d055f44ba7cd0c3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,5fd91dd4a143479b0575fb1f202ec1c501e71fd5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,6b69f2ef10cdb018c0b127a7cab88e590bbddba4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,f8d7e5751267637190eff887c971d5b468106213)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,f92558bbe78d6284fedd053900f82a70f0aa8707)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfcdd1ebcfe1a9b262f6ad8419580720dc843c4,72ef3ce80078199bfad32f98d055f44ba7cd0c3d)"}}], "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": "affected", "versions": {"scheme": "generic", "value": "5.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.183,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.152,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.104,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.9,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*)"}}], "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"}], "created": "2026-08-22T17:15:04.255516+00:00", "updated": "2026-08-25T14:00:17.980493+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125", "CWE-126", "CWE-20"]}