{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53071","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.382Z","datePublished":"2026-06-24T16:30:12.694Z","dateUpdated":"2026-07-09T12:10:04.914Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:38:56.987Z"},"descriptions":[{"lang":"en","value":"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()."}],"metrics":[{"cvssV3_1":{"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"}}],"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":"96dca51715d86559ed6ed8028e5445cecb80f3ae","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"330b20ec97916961ee0e6c29c06bc0fa7c96e64c","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"0ccd75c51f620374086f359e906917676e699a1c","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"77a853aec710b2fdf41fa298ea3cbc9a4358f917","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"dc89961b76f12aff47124c1df4bdb32a080f4d0c","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"5501d055a1ce3c747141e3955ba8cf034d193f3e","status":"affected","versionType":"git"},{"version":"15f02b91056253e8cdc592888f431da0731337b8","lessThan":"42776497cdbc9a665b384a6dcb85f0d4bd927eab","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":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.141","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.91","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.1"}]}]}],"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"}},"adp":[{"affected":[{"cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}],"datePublic":"2026-06-24T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol (L2CAP) implementation. A remote Bluetooth Low Energy (BLE) device can exploit this by sending a specially crafted L2CAP ECRED reconfiguration response. This can lead to the corruption of the channel list, potentially causing a Denial of Service (DoS) by making the system unstable or unresponsive. The vulnerability is due to a missing channel lock when a channel is deleted."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Moderate"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"Use After Free","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-53071"},{"name":"RHBZ#2492458","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492458"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.json"}],"timeline":[{"lang":"en","time":"2026-06-24T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-24T00:00:00.000Z","value":"Made public."}],"title":"kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp","x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-07-09T12:10:04.914Z"}}]}}