{"id":"CVE-2026-43062","revision":"e1045c11a50a4c42be18820e294ad619","records":[{"revision":"e1045c11a50a4c42be18820e294ad619","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43062","aliases":[],"title":"Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()","description":"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->result 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.","state":0,"publishedAt":"2026-05-05T15:17:27.83+00:00","modifiedAt":"2026-10-19T19:06:12.056+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bluetooth/l2cap_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"21d3ba696918d6373233aac0b9d51fcabdedddc0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"3b94e62caa1dc1198d0d55d97bd710da1dee15d7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"111f74547eee8cfedfb854284e80f35c8a491186\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"dd3b221e21079ade8263fbb7176f3d55ad75d3b6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"d90150c72d2e6a8a3079e88755dafcfbe91c746d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"5a1ea296f8589ce8f1e3141b2b123b34ad010e19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"f110b8f58b254bf997cec1bd60701b7798e9bb82\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"15f02b91056253e8cdc592888f431da0731337b8\",\n                            \"lessThan\": \"15145675690cab2de1056e7ed68e59cbd0452529\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bluetooth/l2cap_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.203\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.167\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.130\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.78\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.20\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.10\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/21d3ba696918d6373233aac0b9d51fcabdedddc0","https://git.kernel.org/stable/c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7","https://git.kernel.org/stable/c/111f74547eee8cfedfb854284e80f35c8a491186","https://git.kernel.org/stable/c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6","https://git.kernel.org/stable/c/d90150c72d2e6a8a3079e88755dafcfbe91c746d","https://git.kernel.org/stable/c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19","https://git.kernel.org/stable/c/f110b8f58b254bf997cec1bd60701b7798e9bb82","https://git.kernel.org/stable/c/15145675690cab2de1056e7ed68e59cbd0452529"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43062","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43062","identifiers":["CVE-2026-43062"]},"retained":false,"historicalAffected":[]}],"coverage":[]}