Tag

Iouring

All articles tagged with #iouring

PoC Unleashes PinTheft Linux LPE, Unlocks Root Access
cybersecurity6 days ago

PoC Unleashes PinTheft Linux LPE, Unlocks Root Access

A proof-of-concept exploit named PinTheft has been published for a Linux kernel local privilege escalation, leveraging an RDS zerocopy double-free flaw to gain root access under specific kernel configurations. The PoC demonstrates a novel way to steal references via io_uring and overwrite in-memory pages, underscoring ongoing Linux kernel security challenges. Admins should apply latest patches or blacklist vulnerable modules to mitigate risk.

technology17 days ago

Linux IO Patches Target 60% Per-Core I/O Boost

At the LSFMM summit, Jens Axboe unveiled PoC patches that pre-map buffers and attach a ready-to-use bio to registered buffers, allowing O_DIRECT to submit bios directly and reducing hot-path IO overhead for IO_uring, NVMe, and block code, achieving about a 60% per-core I/O performance uplift; the work is in the io_uring-io-slots branch with potential upstreaming into the mainline kernel.