A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before 5.1-rc1.
https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-3459.html
https://marc.info/?l=oss-security&m=154721580222522&w=2
https://lore.kernel.org/linux-bluetooth/20190110062833.GA15047%40kroah.com/
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
https://git.kernel.org/linus/7c9cbd0b5e38a1672fcd137894ace3b042dfbf69
https://bugzilla.redhat.com/show_bug.cgi?id=1663176
https://bugzilla.novell.com/show_bug.cgi?id=1120758
https://access.redhat.com/errata/RHSA-2020:0740
https://access.redhat.com/errata/RHSA-2019:3517
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:2043
https://access.redhat.com/errata/RHSA-2019:2029
http://www.openwall.com/lists/oss-security/2019/08/12/1
http://www.openwall.com/lists/oss-security/2019/06/28/2
http://www.openwall.com/lists/oss-security/2019/06/28/1