{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43062", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.981Z", "datePublished": "2026-05-05T15:17:27.830Z", "dateUpdated": "2026-05-11T22:16:58.662Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:16:58.662Z"}, "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/l2cap_core.c"], "versions": [{"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "21d3ba696918d6373233aac0b9d51fcabdedddc0", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "3b94e62caa1dc1198d0d55d97bd710da1dee15d7", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "111f74547eee8cfedfb854284e80f35c8a491186", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "dd3b221e21079ade8263fbb7176f3d55ad75d3b6", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "d90150c72d2e6a8a3079e88755dafcfbe91c746d", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "5a1ea296f8589ce8f1e3141b2b123b34ad010e19", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "f110b8f58b254bf997cec1bd60701b7798e9bb82", "status": "affected", "versionType": "git"}, {"version": "15f02b91056253e8cdc592888f431da0731337b8", "lessThan": "15145675690cab2de1056e7ed68e59cbd0452529", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/l2cap_core.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.20", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.10", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.19.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.0"}]}]}], "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"}], "title": "Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-43062", "lastModified": "2026-05-08T13:16:37.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-05-05T16:16:15.340", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/111f74547eee8cfedfb854284e80f35c8a491186"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/15145675690cab2de1056e7ed68e59cbd0452529"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/21d3ba696918d6373233aac0b9d51fcabdedddc0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b94e62caa1dc1198d0d55d97bd710da1dee15d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5a1ea296f8589ce8f1e3141b2b123b34ad010e19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d90150c72d2e6a8a3079e88755dafcfbe91c746d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd3b221e21079ade8263fbb7176f3d55ad75d3b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f110b8f58b254bf997cec1bd60701b7798e9bb82"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()", "id": "2466785", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466785"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-843", "details": ["A flaw was found in the Linux kernel's Bluetooth L2CAP component. A type confusion vulnerability exists in the `l2cap_ecred_reconf_rsp()` function, where incoming data is incorrectly cast. This can lead to valid L2CAP_ECRED_RECONF_RSP packets being rejected and incorrect data being processed, potentially causing a denial of service or unexpected behavior."], "name": "CVE-2026-43062", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43062\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43062\nhttps://lore.kernel.org/linux-cve-announce/2026050538-CVE-2026-43062-053e@gregkh/T"], "threat_severity": "Moderate"}

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