{"id":"CVE-2026-43062","title":"Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()","summary":"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…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 21d3ba696918d6373233aac0b9d51fcabdedddc0","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 3b94e62caa1dc1198d0d55d97bd710da1dee15d7","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 111f74547eee8cfedfb854284e80f35c8a491186","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < dd3b221e21079ade8263fbb7176f3d55ad75d3b6","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < d90150c72d2e6a8a3079e88755dafcfbe91c746d","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 5a1ea296f8589ce8f1e3141b2b123b34ad010e19","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < f110b8f58b254bf997cec1bd60701b7798e9bb82","Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 15145675690cab2de1056e7ed68e59cbd0452529","Linux 5.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:14:12.423204Z"},"published":"2026-05-05","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:30.924Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43062","references":[{"url":"https://git.kernel.org/stable/c/21d3ba696918d6373233aac0b9d51fcabdedddc0"},{"url":"https://git.kernel.org/stable/c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7"},{"url":"https://git.kernel.org/stable/c/111f74547eee8cfedfb854284e80f35c8a491186"},{"url":"https://git.kernel.org/stable/c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6"},{"url":"https://git.kernel.org/stable/c/d90150c72d2e6a8a3079e88755dafcfbe91c746d"},{"url":"https://git.kernel.org/stable/c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19"},{"url":"https://git.kernel.org/stable/c/f110b8f58b254bf997cec1bd60701b7798e9bb82"},{"url":"https://git.kernel.org/stable/c/15145675690cab2de1056e7ed68e59cbd0452529"}],"tags":["cve.org"],"epss":0.00346,"epssPercentile":0.26533,"ingestedAt":"2026-10-16T17:24:46.680Z","slug":"CVE-2026-43062","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 21d3ba696918d6373233aac0b9d51fcabdedddc0`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 3b94e62caa1dc1198d0d55d97bd710da1dee15d7`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 111f74547eee8cfedfb854284e80f35c8a491186`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < dd3b221e21079ade8263fbb7176f3d55ad75d3b6`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < d90150c72d2e6a8a3079e88755dafcfbe91c746d`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 5a1ea296f8589ce8f1e3141b2b123b34ad010e19`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < f110b8f58b254bf997cec1bd60701b7798e9bb82`\n- `Linux >= 15f02b91056253e8cdc592888f431da0731337b8 < 15145675690cab2de1056e7ed68e59cbd0452529`\n- `Linux 5.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}