{"apiVersion":"1.0","identifier":"CVE-2026-72049","description":"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).","publishedAt":"2026-08-15T06:21:14","lastModifiedAt":"2026-08-17T06:18:02","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72049","cvssScore":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","epssProbability":0.0016,"riskScore":0.72,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72049","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72049","en":"https://www.redsauce.net/en/cves/CVE-2026-72049","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72049","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72049","de":"https://www.redsauce.net/de/cves/CVE-2026-72049","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72049","el":"https://www.redsauce.net/el/cves/CVE-2026-72049"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72049"}}