** Changed in: linux (Ubuntu Wily) Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: linux (Ubuntu Wily) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1555353 Title: integer overflow in xt_alloc_table_info Status in linux package in Ubuntu: In Progress Status in linux source package in Wily: In Progress Status in linux source package in Xenial: In Progress Bug description: [From https://code.google.com/p/google-security- research/issues/detail?id=758 ] A recent refactoring cof this codepath (https://github.com/torvalds/linux/commit/2e4e6a17af35be359cc8f1c924f8f198fbd478cc) introduced an integer overflow in xt_alloc_table_info, which on 32-bit systems can lead to small structure allocation and a copy_from_user based heap corruption. More specifically, the overflow may have been introduced in https://github.com/torvalds/linux/commit/711bdde6a884354ddae8da2fcb495b2a9364cc90 ; specifically the bit: + size_t sz = sizeof(*info) + size; (where size is an unsigned int passed from userspace). This issue should only affect 32bit platforms (xt_table_info.size is an unsigned int). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555353/+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