Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
In the Linux kernel, the following vulnerability has been resolved:atm: clip: Fix potential null-ptr-deref in to_atmarpd().atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clipcauses unregister hang").However, it is not enough because to_atmarpd() is called without RTNL,especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable.Also, there is no RTNL dependency around atmarpd.Let's use a private mutex and RCU to protect access to atmarpd into_atmarpd().
No PoCs from references.
- https://github.com/w4zu/Debian_security