CVE-2026-90081

CVE-2026-90081 is a memory-ordering bug in the Linux kernel's RDS (Reliable Datagram Sockets) subsystem, specifically in rds_cong_map_updated(). Because atomic_inc() provides no ordering and waitqueue_active() is a plain load, the updater can observe an empty wait queue while a waiter still sees ...

CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness

In the Linux kernel, the following vulnerability has been resolved: fuse: fix missing barrier when checking io-uring readiness fuseblockalloc reads fch-initialized and then fch-iouring. fch-iouring is set before fch-initialized, ordered by the smpwmb in fusechansetintialized, but fuseblockalloc h...

CVE-2026-80859

In the Linux kernel, the following vulnerability has been resolved: fuse: fix missing barrier when checking io-uring readiness fuseblockalloc reads fch-initialized and then fch-iouring. fch-iouring is set before fch-initialized, ordered by the smpwmb in fusechansetintialized, but fuseblockalloc h...

CVE-2026-80859: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse: fix missing barrier when checking io-uring readiness fuseblockalloc reads fch-initialized and then fch-iouring. fch-iouring is set before fch-initialized, ordered by the smpwmb in fusechansetintialized, but fuseblockalloc h...

PT-2026-85737

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the FUSE module where the fuse block alloc function reads the fch-initialized and fch-io uring variables without a proper read barrier. Although fch-io uring i...