Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: padata: fixed UAF in padatareorder A bug was found when running the ltp test: BUG: KASAN: slab-use-after-free in padatafindnext+0x29/0x1a0 A read of size 4 at addr ffff88bbfe003524 was performed by task kworker/u113:2/3039206 CPU...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: ila: Call nfunregisternethooks earlier. Syzbot discovered a use-after-free in ilanfinput 1. The issue arises from ilaxlatexitnet freeing the rhashtable, followed by the call to nfunregisternethooks. This should be done in the...

CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

SUSE CVE-2026-64073

In the Linux kernel, the following vulnerability has been resolved: irqwork: Fix use-after-free in irqworksingle on PREEMPTRT On PREEMPTRT, non-HARD irqwork runs in per-CPU kthreads via runirqworkd, so irqworksync uses rcuwait to wait for BUSY==0. After irqworksingle clears BUSY via atomiccmpxchg...

Linux Distros Unpatched Vulnerability : CVE-2026-64073

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - irqwork: Fix use-after-free in irqworksingle on PREEMPTRT On PREEMPTRT, non-HARD irqwork runs in per-CPU kthreads via runirqworkd, so irqworksync uses rcuwait t...

CVE-2026-64075

In the Linux kernel, the following vulnerability has been resolved: fprobe: Fix unregisterfprobe to wait for RCU grace period Commit 4346ba1604093 "fprobe: Rewrite fprobe on function-graph tracer" changed fprobe to register struct fprobe to an rcu-hlist, but it forgot to wait for RCU GP. Thus the...

CVE-2026-64073

In the Linux kernel, the following vulnerability has been resolved: irqwork: Fix use-after-free in irqworksingle on PREEMPTRT On PREEMPTRT, non-HARD irqwork runs in per-CPU kthreads via runirqworkd, so irqworksync uses rcuwait to wait for BUSY==0. After irqworksingle clears BUSY via atomiccmpxchg...

CVE-2026-64079

CVE-2026-64079 is a NULL dereference in the Linux kernel's netfilter x_tables subsystem. The arp/ip(6)t_register_table() function adds a table to the per-netns list via xt_register_table() before allocating the per-netns hook ops copy, leaving a window where the table is visible with ops=NULL. If...

CVE-2026-64073 irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT

In the Linux kernel, the following vulnerability has been resolved: irqwork: Fix use-after-free in irqworksingle on PREEMPTRT On PREEMPTRT, non-HARD irqwork runs in per-CPU kthreads via runirqworkd, so irqworksync uses rcuwait to wait for BUSY==0. After irqworksingle clears BUSY via atomiccmpxchg...

CVE-2026-64073

In the Linux kernel, the following vulnerability has been resolved: irqwork: Fix use-after-free in irqworksingle on PREEMPTRT On PREEMPTRT, non-HARD irqwork runs in per-CPU kthreads via runirqworkd, so irqworksync uses rcuwait to wait for BUSY==0. After irqworksingle clears BUSY via atomiccmpxchg...

CVE-2026-64073

Summary of CVE-2026-64073 (Linux kernel): A use-after-free in irq_work_single() on PREEMPT_RT was fixed. On PREEMPT_RT, non-HARD irq_work runs in per-CPU kthreads via run_irq_workd(), and irq_work_sync() uses rcuwait() to wait for BUSY==0. After irq_work_single() clears BUSY with atomic_cmpxchg()...

CVE-2026-52947

The CVE-2026-52947 issue affects the Linux kernel qrtr subsystem, specifically in qrtr_port_remove(), where the socket reference count is decremented via __sock_put() before the port is removed from the qrtr_ports XArray and before the RCU grace period elapses. This creates a race window where a ...

CVE-2026-52947 net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturation and potential UAF in qrtrportremove In qrtrportremove, the socket reference count is decremented via sockput before the port is removed from the qrtrports XArray and before the RCU grace period...

Siemens RUGGEDCOM RST2428P Improper Input Validation (CVE-2026-23231)

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: fix use-after-free in nftablesaddchain nftablesaddchain publishes the chain to table-chains via listaddtailrcu in nftchainadd before registering hooks. If nftablesregisterhook then fails, the error path calls...

CVE-2026-43091

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...

CVE-2026-43091 xfrm: Wait for RCU readers during policy netns exit

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...

CVE-2026-43091

The CVE-2026-43091 vulnerability affects the Linux kernel xfrm policy handling during netns exit. The root cause is that xfrm_policy_fini() frees the policy_bydst hash tables after flushing work items and deleting policies, but does not wait for concurrent RCU readers to exit read-side critical s...

CVE-2026-43050 atm: lec: fix use-after-free in sock_def_readable()

In the Linux kernel, the following vulnerability has been resolved: atm: lec: fix use-after-free in sockdefreadable A race condition exists between lecatmclose setting priv-lecd to NULL and concurrent access to priv-lecd in sendtolecd, lechandlebridge, and lecatmsend. When the socket is freed via...

CVE-2026-31541

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix tracemarker copy link list updates When the "copytracemarker" option is enabled for an instance, anything written into /sys/kernel/tracing/tracemarker is also copied into that instances buffer. When the option is set...

CVE-2026-23392

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: release flowtable after rcu grace period on error Call synchronizercu after unregistering the hooks from error path, since a hook that already refers to this flowtable can be already registered, exposing this...