{"api_version":"1","generated_at":"2026-07-02T01:27:44+00:00","cve":"CVE-2026-53071","urls":{"html":"https://cve.report/CVE-2026-53071","api":"https://cve.report/api/cve/CVE-2026-53071.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53071","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53071"},"summary":{"title":"Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:20","updated_at":"2026-06-30 03:20:54"},"problem_types":["CWE-414","CWE-414 Missing Lock 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the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-28T06:38:56.987Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3ae"},{"url":"https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c"},{"url":"https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c"},{"url":"https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917"},{"url":"https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14"},{"url":"https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c"},{"url":"https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e"},{"url":"https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab"}],"title":"Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53071","datePublished":"2026-06-24T16:30:12.694Z","dateReserved":"2026-06-09T07:44:35.382Z","dateUpdated":"2026-06-30T02:43:27.402Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:20","lastModifiedDate":"2026-06-30 03:20:54","problem_types":["CWE-414","CWE-414 Missing Lock Check"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53071","Ordinal":"1","Title":"Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rs","CVE":"CVE-2026-53071","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53071","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().","Type":"Description","Title":"Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rs"}]}}}