{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-10643", "tracking": { "current_release_date": "2026-09-07T03:20:39.939979Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-10643", "initial_release_date": "2026-06-27T23:52:47.577825Z", "revision_history": [ { "date": "2026-06-27T23:52:47.577825Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-06-27T23:53:28.658303Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-06-28T00:28:07.055817Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-06-28T00:28:09.248613Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-06-28T07:35:07.875788Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-06-28T17:06:08.615324Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-06-29T16:06:24.415365Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-06-29T16:06:26.585291Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-07-06T20:27:43.493777Z", "number": "9", "summary": "Products created (1).| Product Identifiers created (1)." }, { "date": "2026-07-06T20:27:45.641163Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-07-10T15:41:48.396876Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-12T13:20:08.007464Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (24).| References created (3).| CWES updated (1)." }, { "date": "2026-07-12T13:20:20.911447Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-07-14T20:04:17.634928Z", "number": "14", "summary": "Description removed for source.| Description created for source.| References created (1)." }, { "date": "2026-07-14T20:17:36.785261Z", "number": "15", "summary": "Description removed for source.| Description created for source.| References created (1)." }, { "date": "2026-07-15T09:02:47.148427Z", "number": "16", "summary": "Description removed for source.| Description created for source.| References created (1)." }, { "date": "2026-08-06T22:40:24.864208Z", "number": "17", "summary": "Products connected (1).| Products removed (1)." }, { "date": "2026-08-06T22:40:26.086124Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-08-11T15:11:53.440959Z", "number": "19", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-09-02T10:45:46.449572Z", "number": "20", "summary": "EPSS updated." }, { "date": "2026-09-02T23:34:59.479169Z", "number": "21", "summary": "NCSC Score updated." }, { "date": "2026-09-03T14:38:16.739452Z", "number": "22", "summary": "EPSS updated." }, { "date": "2026-09-03T19:01:41.964186Z", "number": "23", "summary": "EPSS updated." }, { "date": "2026-09-04T15:47:42.423823Z", "number": "24", "summary": "EPSS updated." }, { "date": "2026-09-05T03:59:21.360735Z", "number": "25", "summary": "NCSC Score updated." }, { "date": "2026-09-05T15:45:35.007867Z", "number": "26", "summary": "EPSS updated." }, { "date": "2026-09-06T15:47:15.887296Z", "number": "27", "summary": "EPSS updated." } ], "status": "interim", "version": "27" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:semver/4.0.0|<4.5.0", "product": { "name": "vers:semver/4.0.0|<4.5.0", "product_id": "CSAFPID-8507797" } }, { "category": "product_version_range", "name": "vers:unknown/>=3.6.0|<=4.4.1", "product": { "name": "vers:unknown/>=3.6.0|<=4.4.1", "product_id": "CSAFPID-8537761", "product_identification_helper": { "cpe": "cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Zephyr" } ], "category": "vendor", "name": "Zephyrproject" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/v3.6.0", "product": { "name": "vers:unknown/v3.6.0", "product_id": "CSAFPID-5596064" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0", "product": { "name": "vers:unknown/v3.7.0", "product_id": "CSAFPID-5596069" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc1", "product": { "name": "vers:unknown/v3.7.0-rc1", "product_id": "CSAFPID-5596070" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc2", "product": { "name": "vers:unknown/v3.7.0-rc2", "product_id": "CSAFPID-5596071" } }, { "category": "product_version_range", "name": "vers:unknown/v3.7.0-rc3", "product": { "name": "vers:unknown/v3.7.0-rc3", "product_id": "CSAFPID-5596072" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0", "product": { "name": "vers:unknown/v4.0.0", "product_id": "CSAFPID-5604263" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc1", "product": { "name": "vers:unknown/v4.0.0-rc1", "product_id": "CSAFPID-5604264" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc2", "product": { "name": "vers:unknown/v4.0.0-rc2", "product_id": "CSAFPID-5604265" } }, { "category": "product_version_range", "name": "vers:unknown/v4.0.0-rc3", "product": { "name": "vers:unknown/v4.0.0-rc3", "product_id": "CSAFPID-5604266" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0", "product": { "name": "vers:unknown/v4.1.0", "product_id": "CSAFPID-5604267" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc1", "product": { "name": "vers:unknown/v4.1.0-rc1", "product_id": "CSAFPID-5604268" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc2", "product": { "name": "vers:unknown/v4.1.0-rc2", "product_id": "CSAFPID-5604269" } }, { "category": "product_version_range", "name": "vers:unknown/v4.1.0-rc3", "product": { "name": "vers:unknown/v4.1.0-rc3", "product_id": "CSAFPID-5604270" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0", "product": { "name": "vers:unknown/v4.2.0", "product_id": "CSAFPID-8566770" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc1", "product": { "name": "vers:unknown/v4.2.0-rc1", "product_id": "CSAFPID-8566773" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc2", "product": { "name": "vers:unknown/v4.2.0-rc2", "product_id": "CSAFPID-8566772" } }, { "category": "product_version_range", "name": "vers:unknown/v4.2.0-rc3", "product": { "name": "vers:unknown/v4.2.0-rc3", "product_id": "CSAFPID-8566771" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0", "product": { "name": "vers:unknown/v4.3.0", "product_id": "CSAFPID-8570147" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc1", "product": { "name": "vers:unknown/v4.3.0-rc1", "product_id": "CSAFPID-8570150" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc2", "product": { "name": "vers:unknown/v4.3.0-rc2", "product_id": "CSAFPID-8570149" } }, { "category": "product_version_range", "name": "vers:unknown/v4.3.0-rc3", "product": { "name": "vers:unknown/v4.3.0-rc3", "product_id": "CSAFPID-8570148" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc1", "product": { "name": "vers:unknown/v4.4.0-rc1", "product_id": "CSAFPID-8570146" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc2", "product": { "name": "vers:unknown/v4.4.0-rc2", "product_id": "CSAFPID-8570145" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0-rc3", "product": { "name": "vers:unknown/v4.4.0-rc3", "product_id": "CSAFPID-8570144" } } ], "category": "product_name", "name": "zephyr" } ], "category": "vendor", "name": "zephyrproject-rtos" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-10643", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "Zephyr's IP socket recvmsg() implementation (subsys/net/lib/sockets/sockets_inet.c, insert_pktinfo()) validated the user-supplied ancillary (msg_control) buffer using only the payload length (msg->msg_controllen < pktinfo_len) before writing a full control message consisting of an aligned cmsg header plus the payload. Because the check omitted the cmsg header size, a control buffer whose length falls in the under-checked window (e.g. 16-27 bytes for IPv4 IP_PKTINFO on a 64-bit target, where a single element actually occupies 28 bytes) passes the guard yet causes a fixed-size out-of-bounds write of up to one cmsg header (~12 bytes) past the end of the buffer.\n\nUnder CONFIG_USERSPACE the recvmsg verifier allocates a kernel-heap copy of the control buffer sized to msg_controllen and runs the implementation against it, so the overflow corrupts kernel heap memory and is triggerable from an unprivileged userspace thread; in supervisor mode it corrupts the caller's buffer.\n\nThe path is reachable on a UDP/IP socket with IP_PKTINFO/IPV6_RECVPKTINFO (or hoplimit/timestamping) enabled when the application calls recvmsg() with an undersized control buffer and a datagram is received; part of the overwritten bytes (the destination IP in ipi_addr) is influenced by the received packet.\n\nThe fix makes the capacity check use NET_CMSG_SPACE(pktinfo_len) (aligned header + aligned data) and returns -ENOMEM when the buffer is too small. Affected: v3.6.0 through v4.4.0.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-10643" }, { "category": "description", "text": "Zephyr's IP socket recvmsg() implementation (subsys/net/lib/sockets/sockets_inet.c, insert_pktinfo()) validated the user-supplied ancillary (msg_control) buffer using only the payload length (msg->msg_controllen < pktinfo_len) before writing a full control message consisting of an aligned cmsg header plus the payload. Because the check omitted the cmsg header size, a control buffer whose length falls in the under-checked window (e.g. 16-27 bytes for IPv4 IP_PKTINFO on a 64-bit target, where a single element actually occupies 28 bytes) passes the guard yet causes a fixed-size out-of-bounds write of up to one cmsg header (~12 bytes) past the end of the buffer.\n\nUnder CONFIG_USERSPACE the recvmsg verifier allocates a kernel-heap copy of the control buffer sized to msg_controllen and runs the implementation against it, so the overflow corrupts kernel heap memory and is triggerable from an unprivileged userspace thread; in supervisor mode it corrupts the caller's buffer.\n\nThe path is reachable on a UDP/IP socket with IP_PKTINFO/IPV6_RECVPKTINFO (or hoplimit/timestamping) enabled when the application calls recvmsg() with an undersized control buffer and a datagram is received; part of the overwritten bytes (the destination IP in ipi_addr) is influenced by the received packet.\n\nThe fix makes the capacity check use NET_CMSG_SPACE(pktinfo_len) (aligned header + aligned data) and returns -ENOMEM when the buffer is too small. Affected: v3.6.0 through v4.4.0.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-10643.json?alt=media" }, { "category": "description", "text": "Zephyr's IP socket recvmsg() implementation (subsys/net/lib/sockets/sockets_inet.c, insert_pktinfo()) validated the user-supplied ancillary (msg_control) buffer using only the payload length (msg->msg_controllen < pktinfo_len) before writing a full control message consisting of an aligned cmsg header plus the payload. Because the check omitted the cmsg header size, a control buffer whose length falls in the under-checked window (e.g. 16-27 bytes for IPv4 IP_PKTINFO on a 64-bit target, where a single element actually occupies 28 bytes) passes the guard yet causes a fixed-size out-of-bounds write of up to one cmsg header (~12 bytes) past the end of the buffer.\n\nUnder CONFIG_USERSPACE the recvmsg verifier allocates a kernel-heap copy of the control buffer sized to msg_controllen and runs the implementation against it, so the overflow corrupts kernel heap memory and is triggerable from an unprivileged userspace thread; in supervisor mode it corrupts the caller's buffer.\n\nThe path is reachable on a UDP/IP socket with IP_PKTINFO/IPV6_RECVPKTINFO (or hoplimit/timestamping) enabled when the application calls recvmsg() with an undersized control buffer and a datagram is received; part of the overwritten bytes (the destination IP in ipi_addr) is influenced by the received packet.\n\nThe fix makes the capacity check use NET_CMSG_SPACE(pktinfo_len) (aligned header + aligned data) and returns -ENOMEM when the buffer is too small. Affected: v3.6.0 through v4.4.0.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/10xxx/CVE-2026-10643.json" }, { "category": "other", "text": "0.00164", "title": "EPSS" }, { "category": "other", "text": "4.6", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Nvd", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to an uncommon product vendor, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8537761", "CSAFPID-5596064", "CSAFPID-5596069", "CSAFPID-5596070", "CSAFPID-5596071", "CSAFPID-5596072", "CSAFPID-5604263", "CSAFPID-5604264", "CSAFPID-5604265", "CSAFPID-5604266", "CSAFPID-5604267", "CSAFPID-5604268", "CSAFPID-5604269", "CSAFPID-5604270", "CSAFPID-8566770", "CSAFPID-8566771", "CSAFPID-8566772", "CSAFPID-8566773", "CSAFPID-8570144", "CSAFPID-8570145", "CSAFPID-8570146", "CSAFPID-8570147", "CSAFPID-8570148", "CSAFPID-8570149", "CSAFPID-8570150", "CSAFPID-8507797" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-10643" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/10xxx/CVE-2026-10643.json" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-10643.json?alt=media" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-10643" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/zephyrproject-rtos/zephyr/commit/01fe77b2ec3885583f709a17c5203ce02bd77012" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-pvf7-7mrp-35w7" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10643.json" }, { "category": "external", "summary": "Reference - osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10643" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H", "baseScore": 8.7, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5596064", "CSAFPID-5596069", "CSAFPID-5596070", "CSAFPID-5596071", "CSAFPID-5596072", "CSAFPID-5604263", "CSAFPID-5604264", "CSAFPID-5604265", "CSAFPID-5604266", "CSAFPID-5604267", "CSAFPID-5604268", "CSAFPID-5604269", "CSAFPID-5604270", "CSAFPID-8507797", "CSAFPID-8537761", "CSAFPID-8566770", "CSAFPID-8566771", "CSAFPID-8566772", "CSAFPID-8566773", "CSAFPID-8570144", "CSAFPID-8570145", "CSAFPID-8570146", "CSAFPID-8570147", "CSAFPID-8570148", "CSAFPID-8570149", "CSAFPID-8570150" ] } ], "title": "CVE-2026-10643" } ] }