From: Alexander Potapenko <glider@xxxxxxxxxx> Date: Mon, 6 Mar 2017 19:46:14 +0100 > KMSAN (KernelMemorySanitizer, a new error detection tool) reports use of > uninitialized memory in selinux_socket_bind(): ... > (the line numbers are relative to 4.8-rc6, but the bug persists upstream) > > , when I run the following program as root: ... > (for different values of |size| other error reports are printed). > > This happens because bind() unconditionally copies |size| bytes of > |addr| to the kernel, leaving the rest uninitialized. Then > security_socket_bind() reads the IP address bytes, including the > uninitialized ones, to determine the port, or e.g. pass them further to > sel_netnode_find(), which uses them to calculate a hash. > > Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> Are the SELINUX folks going to pick this up or should I? _______________________________________________ Selinux mailing list Selinux@xxxxxxxxxxxxx To unsubscribe, send email to Selinux-leave@xxxxxxxxxxxxx. To get help, send an email containing "help" to Selinux-request@xxxxxxxxxxxxx.
