** Also affects: linux-oem-5.10 (Ubuntu) Importance: Undecided Status: New
** Changed in: linux-oem-5.10 (Ubuntu Bionic) Status: New => Invalid ** Changed in: linux-oem-5.10 (Ubuntu Focal) Status: New => Fix Committed ** Changed in: linux-oem-5.10 (Ubuntu Hirsute) Status: New => Invalid ** Changed in: linux-oem-5.10 (Ubuntu Impish) Status: New => Invalid ** Changed in: linux-oem-5.10 (Ubuntu Jammy) Status: New => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.10 in Ubuntu. https://bugs.launchpad.net/bugs/1949516 Title: require CAP_NET_ADMIN to attach N_HCI ldisc Status in linux package in Ubuntu: In Progress Status in linux-oem-5.10 package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux-oem-5.10 source package in Bionic: Invalid Status in linux source package in Focal: Fix Committed Status in linux-oem-5.10 source package in Focal: Fix Committed Status in linux source package in Hirsute: Fix Committed Status in linux-oem-5.10 source package in Hirsute: Invalid Status in linux source package in Impish: Fix Committed Status in linux-oem-5.10 source package in Impish: Invalid Status in linux source package in Jammy: In Progress Status in linux-oem-5.10 source package in Jammy: Invalid Bug description: [Impact] Any unprivileged user can attach N_HCI ldisc and send packets coming from a virtual controller by using PTYs. This exposes attack surface on systems where bluetooth is not needed or even allow local attacks that would otherwise require physical proximity. [Test case] Try attaching N_HCI ldisc to a tty. ldattach HCI /dev/tty [Potential regression] Users who rely on programs using N_HCI line discipline in order to emulate or proxy a bluetooth controller will require privilege they may not have. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1949516/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp