{"id":"CVE-2026-72049","title":"ieee802154: admin-gate legacy LLSEC dump operations","summary":"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_KE…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 3465035ba18b1ed50f8d201897d14135d20532b0","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < dffe745760f38fac0b8288e0dc4759b23d9888ff","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < e84708ef7521f3bffc85a449954042018abbd60e","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 5abe94a205539d27945cda3ba43fdcfe295cf2c8","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 09fd25cd8cd80a6b3edef04e53a7324d06ac2180","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 1905ebabe638c946aced00c4bb664da26cac56d5","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 6383248058956f2a52d720b1e9f8921099cdae04","Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 9c1e0b6d49471a712511d23fc9d06901561135e8","Linux 3.16"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:50:41.118128Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:53:17.784Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72049","references":[{"url":"https://git.kernel.org/stable/c/3465035ba18b1ed50f8d201897d14135d20532b0"},{"url":"https://git.kernel.org/stable/c/dffe745760f38fac0b8288e0dc4759b23d9888ff"},{"url":"https://git.kernel.org/stable/c/e84708ef7521f3bffc85a449954042018abbd60e"},{"url":"https://git.kernel.org/stable/c/5abe94a205539d27945cda3ba43fdcfe295cf2c8"},{"url":"https://git.kernel.org/stable/c/09fd25cd8cd80a6b3edef04e53a7324d06ac2180"},{"url":"https://git.kernel.org/stable/c/1905ebabe638c946aced00c4bb664da26cac56d5"},{"url":"https://git.kernel.org/stable/c/6383248058956f2a52d720b1e9f8921099cdae04"},{"url":"https://git.kernel.org/stable/c/9c1e0b6d49471a712511d23fc9d06901561135e8"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.04812,"ingestedAt":"2026-10-16T17:24:46.874Z","slug":"CVE-2026-72049","body":"## Overview\n\nIn 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).\n\n## Affected\n\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 3465035ba18b1ed50f8d201897d14135d20532b0`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < dffe745760f38fac0b8288e0dc4759b23d9888ff`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < e84708ef7521f3bffc85a449954042018abbd60e`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 5abe94a205539d27945cda3ba43fdcfe295cf2c8`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 09fd25cd8cd80a6b3edef04e53a7324d06ac2180`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 1905ebabe638c946aced00c4bb664da26cac56d5`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 6383248058956f2a52d720b1e9f8921099cdae04`\n- `Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 9c1e0b6d49471a712511d23fc9d06901561135e8`\n- `Linux 3.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}