CVE-2026-22009-Linux-eBPF-Map-Locking-Race-Use-After-Free

CVE-2026-22009 – Linux eBPF Map Locking Race → Use‑After‑Free Program Code C simulation root@kitploit: // ebpfmapuaf.c - Simulated concurrent map update/free include include include include void mapdata = NULL; int mapfreed = 0; void updatemapvoid arg // Simulate eBPF program updating map if...

Linux Distros Unpatched Vulnerability : CVE-2026-89708

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: RCU-protect clcbsession to fix use-after-free on session teardown After a DESTROYSESSION the per- session teardown path can free a session while rpciod...

Linux Distros Unpatched Vulnerability : CVE-2026-89709

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lockd, nfsd: RCU-protect nlmsvcops dispatch nlmsvcops is published by nfsdlockdinit and cleared by nfsdlockdshutdown with plain stores, while lockd dereferences...

Linux Distros Unpatched Vulnerability : CVE-2026-89670

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: hold rcu across localio cmpxchg retry nfsdfile objects are freed via callrcu filecache.c:296, and nfsdfileslab is created without SLABTYPESAFEBYRCU...

Linux Distros Unpatched Vulnerability : CVE-2026-80994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: openvswitch: fix flow mask use-after-free on flow deletion The commit in the Fixes tag below made so flow-mask free is scheduled via RCU right after it is...

Linux Distros Unpatched Vulnerability : CVE-2026-89488

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovsmutex. The CT...

Linux Distros Unpatched Vulnerability : CVE-2026-89545

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sunrpc: defer rqargp and rqresp free until after RCU grace period svcrqstfree frees rqstp-rqargp and rqstp-rqresp synchronously via kfree, but defers the rqstp...

CVE-2026-89545

A flaw was found in the Linux kernel. This vulnerability exists within the sunrpc component, where memory associated with rqargp and rqresp is freed prematurely. Specifically, the svcrqstfree function frees these structures synchronously, while the main request structure rqstp is freed later via...

CVE-2026-89756

A flaw was found in the Linux kernel. When performing memory migration on KVM Kernel-based Virtual Machine hosts, the migratepagesbatch function fails to report RCU Read-Copy Update tasks quiescent states during large batch unmapping operations. This oversight causes the migrating task to become ...

CVE-2026-89753

A flaw was found in the Linux kernel's memory management subsystem. The shrinklruvec function, responsible for memory reclaim, fails to properly report Read-Copy-Update RCU task quiescent states on systems with preemption enabled. This can lead to RCU task stalls, causing system unresponsiveness ...

CVE-2026-89567

A flaw was found in the Linux kernel's jbd2 shrinker. This component, which manages journal buffers, does not correctly account for busy checkpoint buffers. This oversight can cause the shrinker to hold a critical system lock for an extended period when processing many busy buffers. The prolonged...

CVE-2026-89566

A flaw was found in the Linux kernel's jbd2 component. When the kernel's journaling block device jbd2 processes busy checkpoint buffers, it can skip a crucial rescheduling check. This oversight can lead to prolonged holding of a critical lock, causing other central processing units CPUs to wait...

AZL-100887 CVE-2026-89756 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: mm/migrate: report RCU-tasks quiescent states in migratepagesbatch migratepagesbatch unmaps each folio before moving it, and every unmap runs the mmunotifier invalidate callbacks. On KVM hosts trytomigrate ends up in...

CVE-2026-89759

In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid soft lockup when scanning task stacks Patch series "mm/kmemleak: avoid soft lockup when scanning task", v3. kmemleakscan scans every task stack under one rcureadlock with no reschedule point, which can trip the...

CVE-2026-89756

In the Linux kernel, the following vulnerability has been resolved: mm/migrate: report RCU-tasks quiescent states in migratepagesbatch migratepagesbatch unmaps each folio before moving it, and every unmap runs the mmunotifier invalidate callbacks. On KVM hosts trytomigrate ends up in...

AZL-100839 CVE-2026-89753 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: report RCU-tasks quiescent states in shrinklruvec I am seeing some rcutasks stalls in the Meta fleet during reclaim. INFO: rcutasks detected stalls on tasks: 0000000088620d09: .. nvcsw: 6735/6735 holdout: 1 idlecpu: -1...

AZL-100301 CVE-2026-89759 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid soft lockup when scanning task stacks Patch series "mm/kmemleak: avoid soft lockup when scanning task", v3. kmemleakscan scans every task stack under one rcureadlock with no reschedule point, which can trip the...

CVE-2026-89753

In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: report RCU-tasks quiescent states in shrinklruvec I am seeing some rcutasks stalls in the Meta fleet during reclaim. INFO: rcutasks detected stalls on tasks: 0000000088620d09: .. nvcsw: 6735/6735 holdout: 1 idlecpu: -1...

AZL-100118 CVE-2026-89708 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: RCU-protect clcbsession to fix use-after-free on session teardown After a DESTROYSESSION the per-session teardown path can free a session while rpciod still holds an inflight callback rpctask that dereferences...

CVE-2026-89708

In the Linux kernel, the following vulnerability has been resolved: nfsd: RCU-protect clcbsession to fix use-after-free on session teardown After a DESTROYSESSION the per-session teardown path can free a session while rpciod still holds an inflight callback rpctask that dereferences...