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CVE-2026-72049 (GCVE-0-2026-72049)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-17 05:39
VLAI
Title
ieee802154: admin-gate legacy LLSEC dump operations
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154: admin-gate legacy LLSEC dump operations In net/ieee802154/netlink.c, the legacy IEEE802154_NL family ops table builds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV, LLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which sets no .flags, so generic netlink runs them ungated. The modern nl802154 family admin-gates the equivalent reads via NL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM. Any local uid that can open AF_NETLINK / NETLINK_GENERIC can resolve the "802.15.4 MAC" family and dump LLSEC_LIST_KEY on any wpan netdev that has an LLSEC key installed; the dump handler writes the raw 16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied verbatim from struct ieee802154_llsec_key.key) into the reply. Recovering the AES key compromises 802.15.4 LLSEC link confidentiality and authenticity, since LLSEC uses CCM* and the same key authenticates and encrypts frames. Impact: any local uid with no capabilities can read the raw 16-byte AES-128 LLSEC key from the kernel keytable on any wpan netdev that has an administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY dump on the legacy IEEE802154_NL generic-netlink family. Introduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but setting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump entries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the modern nl802154 family exposes their equivalents to unprivileged readers by design (NL802154_CMD_GET_WPAN_PHY and NL802154_CMD_GET_INTERFACE carry "can be retrieved by unprivileged users" annotations).
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 3465035ba18b1ed50f8d201897d14135d20532b0 (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < dffe745760f38fac0b8288e0dc4759b23d9888ff (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < e84708ef7521f3bffc85a449954042018abbd60e (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 5abe94a205539d27945cda3ba43fdcfe295cf2c8 (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 09fd25cd8cd80a6b3edef04e53a7324d06ac2180 (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 1905ebabe638c946aced00c4bb664da26cac56d5 (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 6383248058956f2a52d720b1e9f8921099cdae04 (git)
Affected: 3e9c156e2c210ab67b12b1b692983a6b97c19d3f , < 9c1e0b6d49471a712511d23fc9d06901561135e8 (git)
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Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: admin-gate legacy LLSEC dump operations\n\nIn net/ieee802154/netlink.c, the legacy IEEE802154_NL family ops table\nbuilds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV,\nLLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which\nsets no .flags, so generic netlink runs them ungated. The modern\nnl802154 family admin-gates the equivalent reads via\nNL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM.\n\nAny local uid that can open AF_NETLINK / NETLINK_GENERIC can resolve\nthe \"802.15.4 MAC\" family and dump LLSEC_LIST_KEY on any wpan netdev\nthat has an LLSEC key installed; the dump handler writes the raw\n16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied\nverbatim from struct ieee802154_llsec_key.key) into the reply.\nRecovering the AES key compromises 802.15.4 LLSEC link confidentiality\nand authenticity, since LLSEC uses CCM* and the same key authenticates\nand encrypts frames.\n\nImpact: any local uid with no capabilities can read the raw 16-byte\nAES-128 LLSEC key from the kernel keytable on any wpan netdev that has\nan administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY\ndump on the legacy IEEE802154_NL generic-netlink family.\n\nIntroduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but\nsetting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump\nentries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the\nmodern nl802154 family exposes their equivalents to unprivileged\nreaders by design (NL802154_CMD_GET_WPAN_PHY and\nNL802154_CMD_GET_INTERFACE carry \"can be retrieved by unprivileged\nusers\" annotations)."
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
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              "value": "AV:L - Exploitation requires a local syscall path: open AF_NETLINK/NETLINK_GENERIC, resolve the \"802.15.4 MAC\" genl family, and send an NLM_F_DUMP for IEEE802154_LLSEC_LIST_KEY; the bug is in kernel netlink configuration code, not in remote 802.15.4 frame handling.\nAC:L - Once IEEE802154/LLSEC is enabled and keys are installed on a wpan netdev (typical on Zigbee/6LoWPAN gateways and industrial IoT coordinators), an attacker can deterministically trigger the dump and receive key material without races or special memory layout.\nPR:L - The vulnerable dump ops lack GENL_ADMIN_PERM, so netlink_capable(CAP_NET_ADMIN) is never enforced; any basic local UID with permission to create generic-netlink sockets (no capabilities) can read administrator-installed LLSEC keys.\nUI:N - No victim interaction is required beyond the attacker already having local execution access; exploitation is a direct netlink dump request with no user clicks, mounts, or device pairing steps.\nS:U - Impact stays within the host kernel/network stack security boundary (disclosure of kernel-held LLSEC credentials); it does not cross VM, container, or IOMMU isolation boundaries.\nC:H - The dump handler returns full raw 16-byte AES-128 LLSEC key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES) for every installed key, enabling decryption of all CCM*-protected 802.15.4 traffic protected by those keys.\nI:H - Disclosed AES-128 LLSEC keys are used for both encryption and authentication (CCM*); possession enables forging cryptographically valid LLSEC frames and impersonating trusted WPAN devices on Zigbee/6LoWPAN/industrial sensor networks.\nA:N - The bug is a read-only information disclosure via netlink attribute copying; it does not corrupt memory, panic the kernel, or cause hangs or denial of service."
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    "cveId": "CVE-2026-72049",
    "datePublished": "2026-08-15T05:52:06.989Z",
    "dateReserved": "2026-08-09T03:40:39.902Z",
    "dateUpdated": "2026-08-17T05:39:46.666Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-72049\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:21:14.190\",\"lastModified\":\"2026-08-17T06:18:02.973\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nieee802154: admin-gate legacy LLSEC dump operations\\n\\nIn net/ieee802154/netlink.c, the legacy IEEE802154_NL family ops table\\nbuilds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV,\\nLLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which\\nsets no .flags, so generic netlink runs them ungated. The modern\\nnl802154 family admin-gates the equivalent reads via\\nNL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM.\\n\\nAny local uid that can open AF_NETLINK / NETLINK_GENERIC can resolve\\nthe \\\"802.15.4 MAC\\\" family and dump LLSEC_LIST_KEY on any wpan netdev\\nthat has an LLSEC key installed; the dump handler writes the raw\\n16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied\\nverbatim from struct ieee802154_llsec_key.key) into the reply.\\nRecovering the AES key compromises 802.15.4 LLSEC link confidentiality\\nand authenticity, since LLSEC uses CCM* and the same key authenticates\\nand encrypts frames.\\n\\nImpact: any local uid with no capabilities can read the raw 16-byte\\nAES-128 LLSEC key from the kernel keytable on any wpan netdev that has\\nan administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY\\ndump on the legacy IEEE802154_NL generic-netlink family.\\n\\nIntroduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but\\nsetting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump\\nentries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the\\nmodern nl802154 family exposes their equivalents to unprivileged\\nreaders by design (NL802154_CMD_GET_WPAN_PHY and\\nNL802154_CMD_GET_INTERFACE carry \\\"can be retrieved by unprivileged\\nusers\\\" annotations).\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ieee802154/ieee802154.h\",\"net/ieee802154/netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"3465035ba18b1ed50f8d201897d14135d20532b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"dffe745760f38fac0b8288e0dc4759b23d9888ff\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"e84708ef7521f3bffc85a449954042018abbd60e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"5abe94a205539d27945cda3ba43fdcfe295cf2c8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"09fd25cd8cd80a6b3edef04e53a7324d06ac2180\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"1905ebabe638c946aced00c4bb664da26cac56d5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"6383248058956f2a52d720b1e9f8921099cdae04\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3e9c156e2c210ab67b12b1b692983a6b97c19d3f\",\"lessThan\":\"9c1e0b6d49471a712511d23fc9d06901561135e8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ieee802154/ieee802154.h\",\"net/ieee802154/netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/09fd25cd8cd80a6b3edef04e53a7324d06ac2180\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1905ebabe638c946aced00c4bb664da26cac56d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3465035ba18b1ed50f8d201897d14135d20532b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5abe94a205539d27945cda3ba43fdcfe295cf2c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6383248058956f2a52d720b1e9f8921099cdae04\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9c1e0b6d49471a712511d23fc9d06901561135e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dffe745760f38fac0b8288e0dc4759b23d9888ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e84708ef7521f3bffc85a449954042018abbd60e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-17T18:20:29+00:00",
      "cve": "CVE-2026-72049",
      "id": "CVE-2026-72049",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "28",
      "product_status:under_investigation": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ieee802154: admin-gate legacy LLSEC dump operations",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72049.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.