{"id":"CVE-2026-43134","summary":"Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ\n\nThis adds a check for encryption key size upon receiving\nL2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which\nexpects L2CAP_CR_LE_BAD_KEY_SIZE.","modified":"2026-05-28T03:53:28.943825536Z","published":"2026-05-06T11:27:21.541Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43134.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104"},{"type":"WEB","url":"https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecef"},{"type":"WEB","url":"https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaad"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43134.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43134"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d"},{"fixed":"335071c0c3637064ec250481f589075db44fe4e6"},{"fixed":"fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"},{"fixed":"9118601ff90b79e8df3c0c98f48ae00c1b02ecef"},{"fixed":"481ea39b342c347b6ac029f3d418486280be4e45"},{"fixed":"ec91078e132179b04e0c3906b599816c056ceaad"},{"fixed":"96581749c7c14fbec32c35728520867929600041"},{"fixed":"8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"},{"fixed":"138d7eca445ef37a0333425d269ee59900ca1104"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43134.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.14.0"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43134.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}