{"id":"CVE-2020-26558","details":"Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.","aliases":["A-174886838","ASB-A-174886838"],"modified":"2026-02-21T01:32:30.077190Z","published":"2021-05-24T18:15:07.930Z","related":["MGASA-2021-0281","SUSE-SU-2021:2184-1","SUSE-SU-2021:2202-1","SUSE-SU-2021:2291-1","SUSE-SU-2021:2303-1","SUSE-SU-2021:2321-1","SUSE-SU-2021:2324-1","SUSE-SU-2021:2325-1","SUSE-SU-2021:2349-1","SUSE-SU-2021:2406-1","SUSE-SU-2021:2421-1","SUSE-SU-2021:2422-1","SUSE-SU-2021:2426-1","SUSE-SU-2021:2427-1","SUSE-SU-2021:2451-1","SUSE-SU-2022:3687-1","SUSE-SU-2022:3691-1","SUSE-SU-2024:2901-1","SUSE-SU-2024:2923-1","SUSE-SU-2024:2940-1","SUSE-SU-2024:2948-1","openSUSE-SU-2021:2184-1","openSUSE-SU-2021:2202-1","openSUSE-SU-2021:2291-1","openSUSE-SU-2021:2427-1"],"references":[{"type":"WEB","url":"https://kb.cert.org/vuls/id/799380"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/799380"},{"type":"ADVISORY","url":"https://kb.cert.org/vuls/id/799380"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202209-16"},{"type":"ADVISORY","url":"https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4951"},{"type":"ADVISORY","url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"},{"type":"ADVISORY","url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git","events":[{"introduced":"0"},{"fixed":"62fb9874f5da54fdb243003b386128037319b219"}]}],"versions":["v2.6.12","v2.6.12-rc2","v2.6.12-rc3","v2.6.12-rc4","v2.6.12-rc5","v2.6.12-rc6","v2.6.13","v2.6.13-rc1","v2.6.13-rc2","v2.6.13-rc3","v2.6.13-rc4","v2.6.13-rc5","v2.6.13-rc6","v2.6.13-rc7","v2.6.14","v2.6.14-rc1","v2.6.14-rc2","v2.6.14-rc3","v2.6.14-rc4","v2.6.14-rc5","v2.6.15","v2.6.15-rc1","v2.6.15-rc2","v2.6.15-rc3","v2.6.15-rc4","v2.6.15-rc5","v2.6.15-rc6","v2.6.15-rc7","v2.6.16","v2.6.16-rc1","v2.6.16-rc2","v2.6.16-rc3","v2.6.16-rc4","v2.6.16-rc5","v2.6.16-rc6","v2.6.17","v2.6.17-rc1","v2.6.17-rc2","v2.6.17-rc3","v2.6.17-rc4","v2.6.17-rc5","v2.6.17-rc6","v2.6.18","v2.6.18-rc1","v2.6.18-rc2","v2.6.18-rc3","v2.6.18-rc4","v2.6.18-rc5","v2.6.18-rc6","v2.6.18-rc7","v2.6.19","v2.6.19-rc1","v2.6.19-rc2","v2.6.19-rc3","v2.6.19-rc4","v2.6.19-rc5","v2.6.19-rc6","v2.6.20","v2.6.20-rc1","v2.6.20-rc2","v2.6.20-rc3","v2.6.20-rc4","v2.6.20-rc5","v2.6.20-rc6","v2.6.20-rc7","v2.6.21","v2.6.21-rc1","v2.6.21-rc2","v2.6.21-rc3","v2.6.21-rc4","v2.6.21-rc5","v2.6.21-rc6","v2.6.21-rc7","v2.6.22","v2.6.22-rc1","v2.6.22-rc2","v2.6.22-rc3","v2.6.22-rc4","v2.6.22-rc5","v2.6.22-rc6","v2.6.22-rc7","v2.6.23","v2.6.23-rc1","v2.6.23-rc2","v2.6.23-rc3","v2.6.23-rc4","v2.6.23-rc5","v2.6.23-rc6","v2.6.23-rc7","v2.6.23-rc8","v2.6.23-rc9","v2.6.24","v2.6.24-rc1","v2.6.24-rc2","v2.6.24-rc3","v2.6.24-rc4","v2.6.24-rc5","v2.6.24-rc6","v2.6.24-rc7","v2.6.24-rc8","v2.6.25","v2.6.25-rc1","v2.6.25-rc2","v2.6.25-rc3","v2.6.25-rc4","v2.6.25-rc5","v2.6.25-rc6","v2.6.25-rc7","v2.6.25-rc8","v2.6.25-rc9","v2.6.26","v2.6.26-rc1","v2.6.26-rc2","v2.6.26-rc3","v2.6.26-rc4","v2.6.26-rc5","v2.6.26-rc6","v2.6.26-rc7","v2.6.26-rc8","v2.6.26-rc9","v2.6.27","v2.6.27-rc1","v2.6.27-rc2","v2.6.27-rc3","v2.6.27-rc4","v2.6.27-rc5","v2.6.27-rc6","v2.6.27-rc7","v2.6.27-rc8","v2.6.27-rc9","v2.6.28","v2.6.28-rc1","v2.6.28-rc2","v2.6.28-rc3","v2.6.28-rc4","v2.6.28-rc5","v2.6.28-rc6","v2.6.28-rc7","v2.6.28-rc8","v2.6.28-rc9","v2.6.29","v2.6.29-rc1","v2.6.29-rc2","v2.6.29-rc3","v2.6.29-rc4","v2.6.29-rc5","v2.6.29-rc6","v2.6.29-rc7","v2.6.29-rc8","v2.6.30","v2.6.30-rc1","v2.6.30-rc2","v2.6.30-rc3","v2.6.30-rc4","v2.6.30-rc5","v2.6.30-rc6","v2.6.30-rc7","v2.6.30-rc8","v2.6.31","v2.6.31-rc1","v2.6.31-rc2","v2.6.31-rc3","v2.6.31-rc4","v2.6.31-rc5","v2.6.31-rc6","v2.6.31-rc7","v2.6.31-rc8","v2.6.31-rc9","v2.6.32","v2.6.32-rc1","v2.6.32-rc2","v2.6.32-rc3","v2.6.32-rc4","v2.6.32-rc5","v2.6.32-rc6","v2.6.32-rc7","v2.6.32-rc8","v2.6.33","v2.6.33-rc1","v2.6.33-rc2","v2.6.33-rc3","v2.6.33-rc4","v2.6.33-rc5","v2.6.33-rc6","v2.6.33-rc7","v2.6.33-rc8","v2.6.34","v2.6.34-rc1","v2.6.34-rc2","v2.6.34-rc3","v2.6.34-rc4","v2.6.34-rc5","v2.6.34-rc6","v2.6.34-rc7","v2.6.35","v2.6.35-rc1","v2.6.35-rc2","v2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