{"id":"CVE-2026-43062","summary":"Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()\n\nl2cap_ecred_reconf_rsp() casts the incoming data to struct\nl2cap_ecred_conn_rsp (the ECRED *connection* response, 8 bytes with\nresult at offset 6) instead of struct l2cap_ecred_reconf_rsp (2 bytes\nwith result at offset 0).\n\nThis causes two problems:\n\n - The sizeof(*rsp) length check requires 8 bytes instead of the\n   correct 2, so valid L2CAP_ECRED_RECONF_RSP packets are rejected\n   with -EPROTO.\n\n - rsp-\u003eresult reads from offset 6 instead of offset 0, returning\n   wrong data when the packet is large enough to pass the check.\n\nFix by using the correct type.  Also pass the already byte-swapped\nresult variable to BT_DBG instead of the raw __le16 field.","modified":"2026-07-15T01:49:22.097298338Z","published":"2026-05-05T15:17:27.830Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43062.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/111f74547eee8cfedfb854284e80f35c8a491186"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15145675690cab2de1056e7ed68e59cbd0452529"},{"type":"WEB","url":"https://git.kernel.org/stable/c/21d3ba696918d6373233aac0b9d51fcabdedddc0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d90150c72d2e6a8a3079e88755dafcfbe91c746d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f110b8f58b254bf997cec1bd60701b7798e9bb82"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43062.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43062"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"15f02b91056253e8cdc592888f431da0731337b8"},{"fixed":"21d3ba696918d6373233aac0b9d51fcabdedddc0"},{"fixed":"3b94e62caa1dc1198d0d55d97bd710da1dee15d7"},{"fixed":"111f74547eee8cfedfb854284e80f35c8a491186"},{"fixed":"dd3b221e21079ade8263fbb7176f3d55ad75d3b6"},{"fixed":"d90150c72d2e6a8a3079e88755dafcfbe91c746d"},{"fixed":"5a1ea296f8589ce8f1e3141b2b123b34ad010e19"},{"fixed":"f110b8f58b254bf997cec1bd60701b7798e9bb82"},{"fixed":"15145675690cab2de1056e7ed68e59cbd0452529"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43062.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.20"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43062.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L"}]}