linuxsecurity.com / .linuxsecurity-com-linuxsecurity-features

RxRPC is a Linux kernel transport for remote procedure calls. A teardown race reported in August shows that its network namespace cleanup can still reach a peer after that peer has been freed. The failure was caught by the Kernel Address Sanitizer, . ...

An eBPF security system can produce precise Linux telemetry while leaving a harder question unanswered: what happens if the eBPF layer itself is misconfigured, vulnerable, or trusted too broadly?

A Kubernetes workload can run with more Linux capabilities than its code needs. When capability settings are missing or broad, that excess authority may remain invisible because the application still works.

Removing a Linux trace instance should end its lifetime. An open tracefs reader can currently keep using that instance after another task removes it, creating a kernel use-after-free path in the tracing subsystem.

A Linux service may need broad system-call access while it starts, then only a smaller set while it handles requests. A single policy loaded before startup often has to keep every required call available for the service's entire lifetime.

Linux kernel vulnerability news dominated the security updates published from August 20 through August 27. Ubuntu, Debian, Fedora, Mageia, Oracle Linux, Rocky Linux, SUSE, and openSUSE released fixes for standard kernels, cloud kernels, real-time ...

A Linux security hook should be able to check a task without invalidating the identity data that surrounding kernel code is still using. AppArmor broke that expectation when a policy update made the task's current label stale: code inside widely used ...

A Linux uevent can carry bytes from freed kernel memory when one object survives longer than the allocation behind its name. A new Synaptics RMI4 patch demonstrates that path during device removal and a probe failure.

Linux RDS can accept a path count that is larger than the storage allocated for an InfiniBand connection. A peer on the same Remote Direct Memory Access, or RDMA, fabric can then make receive-side kernel code walk beyond that allocation, producing an ...

A Linux TCP query can touch congestion-control memory after a concurrent BPF update has freed it. Two new use-after-free reports show how an ordinary read path inherited a lifetime assumption that no longer holds when BPF makes congestion-control ...