{"id":6746,"date":"2026-09-04T18:49:15","date_gmt":"2026-09-04T10:49:15","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72049"},"modified":"2026-09-04T18:49:15","modified_gmt":"2026-09-04T10:49:15","slug":"cve-2026-72049","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72049","title":{"rendered":"CVE-2026-72049 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: admin-gat"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ieee802154: admin-gate legacy LLSEC dump operations<\/p>\n<p>In net\/ieee802154\/netlink.c, the legacy IEEE802154_NL family ops table<br \/>\nbuilds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV,<br \/>\nLLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which<br \/>\nsets no .flags, so generic netlink runs them ungated. The modern<br \/>\nnl802154 family admin-gates the equivalent reads via<br \/>\nNL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM.<\/p>\n<p>Any local uid that can open AF_NETLINK \/ NETLINK_GENERIC can resolve<br \/>\nthe &#8220;802.15.4 MAC&#8221; family and dump LLSEC_LIST_KEY on any wpan netdev<br \/>\nthat has an LLSEC key installed; the dump handler writes the raw<br \/>\n16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied<br \/>\nverbatim from struct ieee802154_llsec_key.key) into the reply.<br \/>\nRecovering the AES key compromises 802.15.4 LLSEC link confidentiality<br \/>\nand authenticity, since LLSEC uses CCM* and the same key authenticates<br \/>\nand encrypts frames.<\/p>\n<p>Impact: any local uid with no capabilities can read the raw 16-byte<br \/>\nAES-128 LLSEC key from the kernel keytable on any wpan netdev that has<br \/>\nan administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY<br \/>\ndump on the legacy IEEE802154_NL generic-netlink family.<\/p>\n<p>Introduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but<br \/>\nsetting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump<br \/>\nentries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the<br \/>\nmodern nl802154 family exposes their equivalents to unprivileged<br \/>\nreaders by design (NL802154_CMD_GET_WPAN_PHY and<br \/>\nNL802154_CMD_GET_INTERFACE carry &#8220;can be retrieved by unprivileged<br \/>\nusers&#8221; annotations).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ieee802154: admin-gate legacy LLSEC dump operations<\/p>\n<p>In net\/ieee802154\/netlink.c, the legacy IEEE802154_NL family ops table<br \/>\nbuilds <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6746","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}