{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80992", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.811Z", "datePublished": "2026-09-11T19:42:48.855Z", "dateUpdated": "2026-09-13T06:28:56.374Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-13T06:28:56.374Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ravb: avoid dereferencing an invalid PTP clock\n\nThe PTP clock is unavailable before the first open, so querying its\nindex can dereference a NULL pointer. Registration failures can also\nleave an error pointer in priv->ptp.clock.\n\nCache the PHC index separately and report -1 while no clock is\nregistered. Normalize registration errors to NULL and preserve the\nstatic timestamping capabilities."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - ravb_get_ts_info() is reached only via local SIOCETHTOOL ETHTOOL_GET_TS_INFO, ethtool netlink TSINFO_GET, SO_TIMESTAMPING BIND_PHC, or taprio setup on the ravb netdev. Received Ethernet/PTP packets never enter this path.\nAC:L - ethtool timestamp-info on a never-opened ravb interface deterministically calls ptp_clock_index(NULL), and after a normal open/close ravb_ptp_stop() leaves a dangling priv->ptp.clock that the same query dereferences. The attacker does not need a race or a rare config.\nPR:L - ETHTOOL_GET_TS_INFO is on the ethtool ioctl allow-list that skips CAP_NET_ADMIN, and ETHTOOL_MSG_TSINFO_GET has no GENL admin flag, so an unprivileged local user can trigger it. Interface cycling is privileged, but the down/never-opened state exists after normal system management.\nUI:N - The attacker issues the ethtool ioctl/netlink query (or SO_TIMESTAMPING BIND_PHC) directly against the existing ravb netdev. No separate victim action is required.\nS:U - The defect is in the ravb kernel Ethernet/PTP driver and impacts the same kernel. It is not a guest-to-host, IOMMU, or other cross-authority boundary bypass.\nC:H - After ndo_stop, ravb_ptp_stop() unregisters and kfree's struct ptp_clock via ptp_clock_release() but leaves priv->ptp.clock set, so a later ptp_clock_index() is a kernel heap UAF read. Kernel scoring treats UAFs as high confidentiality because freed-object reuse can yield disclosure primitives.\nI:H - The get_ts_info hit is a stale read of ptp_clock.index, but after close the object is a freed heap ptp_clock. Kernel scoring treats that UAF as high integrity impact because heap reuse can be leveraged toward write or control-flow primitives.\nA:H - Before first open, ptp_clock_index(NULL) oopses; a failed ptp_clock_register() leaves an ERR_PTR that is also dereferenced; and the post-close dangling pointer is a UAF that can panic. Any of these kernel crashes is high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/renesas/ravb.h", "drivers/net/ethernet/renesas/ravb_main.c", "drivers/net/ethernet/renesas/ravb_ptp.c"], "versions": [{"version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "lessThan": "fc710f89a644e030a7ca15343176ca862fd61b9d", "status": "affected", "versionType": "git"}, {"version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "lessThan": "8d4d06d6e2b501cb8e30ed3b1924c470358e8052", "status": "affected", "versionType": "git"}, {"version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "lessThan": "0aaa53936419cf0c19c670387fc6d431e042a1b6", "status": "affected", "versionType": "git"}, {"version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "lessThan": "1f77af0aaf277413ff32f6ff8c2c4282bd64c897", "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/ethernet/renesas/ravb.h", "drivers/net/ethernet/renesas/ravb_main.c", "drivers/net/ethernet/renesas/ravb_ptp.c"], "versions": [{"version": "4.2", "status": "affected"}, {"version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "4.2", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d"}, {"url": "https://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052"}, {"url": "https://git.kernel.org/stable/c/0aaa53936419cf0c19c670387fc6d431e042a1b6"}, {"url": "https://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897"}], "title": "net: ravb: avoid dereferencing an invalid PTP clock", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/renesas/ravb.h", "drivers/net/ethernet/renesas/ravb_main.c", "drivers/net/ethernet/renesas/ravb_ptp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fc710f89a644e030a7ca15343176ca862fd61b9d", "status": "affected", "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "versionType": "git"}, {"lessThan": "8d4d06d6e2b501cb8e30ed3b1924c470358e8052", "status": "affected", "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "versionType": "git"}, {"lessThan": "0aaa53936419cf0c19c670387fc6d431e042a1b6", "status": "affected", "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "versionType": "git"}, {"lessThan": "1f77af0aaf277413ff32f6ff8c2c4282bd64c897", "status": "affected", "version": "a0d2f20650e81407d8e51ad2cbdc492861c74e9c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/renesas/ravb.h", "drivers/net/ethernet/renesas/ravb_main.c", "drivers/net/ethernet/renesas/ravb_ptp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.2"}, {"lessThan": "4.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "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\nnet: ravb: avoid dereferencing an invalid PTP clock\n\nThe PTP clock is unavailable before the first open, so querying its\nindex can dereference a NULL pointer. Registration failures can also\nleave an error pointer in priv->ptp.clock.\n\nCache the PHC index separately and report -1 while no clock is\nregistered. Normalize registration errors to NULL and preserve the\nstatic timestamping capabilities."}], "id": "CVE-2026-80992", "lastModified": "2026-09-13T07:17:05.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-11T20:19:06.110", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0aaa53936419cf0c19c670387fc6d431e042a1b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: `net: ravb` NULL pointer dereference via invalid PTP clock", "id": "2532047", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532047"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the `net: ravb` component of the Linux kernel. This vulnerability allows for a NULL pointer dereference when the Precision Time Protocol (PTP) clock's index is queried before it is properly initialized or if its registration fails. This issue could lead to a system crash, resulting in a denial of service."], "name": "CVE-2026-80992", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-11T19:42:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80992\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80992\nhttps://git.kernel.org/stable/c/0aaa53936419cf0c19c670387fc6d431e042a1b6\nhttps://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897\nhttps://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052\nhttps://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d"], "threat_severity": "Moderate"}

{"created": "2026-09-12T02:00:07.482666+00:00", "updated": "2026-09-12T02:00:07.482671+00:00", "vendors": []}