CVE-2026-72049ieee802154: admin-gate legacy LLSEC dump operations
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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).
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 3465035ba18b1ed50f8d201897d14135d20532b0; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before dffe745760f38fac0b8288e0dc4759b23d9888ff; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before e84708ef7521f3bffc85a449954042018abbd60e; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 5abe94a205539d27945cda3ba43fdcfe295cf2c8; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 09fd25cd8cd80a6b3edef04e53a7324d06ac2180; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 1905ebabe638c946aced00c4bb664da26cac56d5; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 6383248058956f2a52d720b1e9f8921099cdae04; from 3e9c156e2c210ab67b12b1b692983a6b97c19d3f before 9c1e0b6d49471a712511d23fc9d06901561135e8 | CNA record |
References
- https://git.kernel.org/stable/c/3465035ba18b1ed50f8d201897d14135d20532b0
- https://git.kernel.org/stable/c/dffe745760f38fac0b8288e0dc4759b23d9888ff
- https://git.kernel.org/stable/c/e84708ef7521f3bffc85a449954042018abbd60e
- https://git.kernel.org/stable/c/5abe94a205539d27945cda3ba43fdcfe295cf2c8
- https://git.kernel.org/stable/c/09fd25cd8cd80a6b3edef04e53a7324d06ac2180
- https://git.kernel.org/stable/c/1905ebabe638c946aced00c4bb664da26cac56d5
- https://git.kernel.org/stable/c/6383248058956f2a52d720b1e9f8921099cdae04
- https://git.kernel.org/stable/c/9c1e0b6d49471a712511d23fc9d06901561135e8
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.