CVE-2026-72049High· 7.1▾ TwilightIn 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_KE…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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).
Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 3465035ba18b1ed50f8d201897d14135d20532b0Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < dffe745760f38fac0b8288e0dc4759b23d9888ffLinux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < e84708ef7521f3bffc85a449954042018abbd60eLinux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 5abe94a205539d27945cda3ba43fdcfe295cf2c8Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 09fd25cd8cd80a6b3edef04e53a7324d06ac2180Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 1905ebabe638c946aced00c4bb664da26cac56d5Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 6383248058956f2a52d720b1e9f8921099cdae04Linux >= 3e9c156e2c210ab67b12b1b692983a6b97c19d3f < 9c1e0b6d49471a712511d23fc9d06901561135e8Linux 3.16Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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