CVE-2026-64123 net: hsr: defer node table free until after RCU readers

In the Linux kernel, the following vulnerability has been resolved: net: hsr: defer node table free until after RCU readers HSR node-list and node-status generic-netlink operations run under rcureadlock. They walk hsr-nodedb through hsrgetnextnode and hsrgetnodedata, but RTMDELLINK teardown remov...

CVE-2026-64123 net: hsr: defer node table free until after RCU readers

In the Linux kernel, the following vulnerability has been resolved: net: hsr: defer node table free until after RCU readers HSR node-list and node-status generic-netlink operations run under rcureadlock. They walk hsr-nodedb through hsrgetnextnode and hsrgetnodedata, but RTMDELLINK teardown remov...

CVE-2026-64119

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64119

CVE-2026-64119 affects the Linux kernel L2TP subsystem. A local unprivileged user can pin the host CPU indefinitely by racing L2TP_CMD_SESSION_GET on L2TP_ATTR_IFNAME with L2TP_CMD_SESSION_CREATE/DELETE on the same tunnel, under CAP_NET_ADMIN. The root cause is list_del_init() in l2tp_session_unh...

CVE-2026-64119 l2tp: use list_del_rcu in l2tp_session_unhash

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64116

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: add NULL check for idev in ipv6hopioam Reported by Sashiko: The function ipv6hopioam accesses in6devgetskb-dev-cnf.ioam6enabled without validating the returned idev pointer. Because addrconfifdown can concurrently cle...

CVE-2026-64096 batman-adv: mcast: fix use-after-free in orig_node RCU release

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: fix use-after-free in orignode RCU release batadvmcastpurgeorig removes entries from RCU-protected hlists but does not wait for an RCU grace period before returning. Concurrent RCU readers may still accesses...

CVE-2026-64096

Summary of CVE-2026-64096 (Linux kernel, batman-adv): A use-after-free in batman-adv multicast origin node release was fixed. The function batadv_mcast_purge_orig() removed entries from RCU-protected hlists without waiting for an RCU grace period, risking access to freed memory by concurrent read...

CVE-2026-64096 batman-adv: mcast: fix use-after-free in orig_node RCU release

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: fix use-after-free in orignode RCU release batadvmcastpurgeorig removes entries from RCU-protected hlists but does not wait for an RCU grace period before returning. Concurrent RCU readers may still accesses...

EUVD-2026-45655

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64082

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64082 riscv: Fix register corruption from uninitialized cregs on error

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64079 netfilter: x_tables: allocate hook ops while under mutex

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: allocate hook ops while under mutex arp/ip6tregistertable add the table to the per-netns list via xtregistertable before allocating the per-netns hook ops copy via kmemduparray. This leaves a window where the...

EUVD-2026-45652

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: allocate hook ops while under mutex arp/ip6tregistertable add the table to the per-netns list via xtregistertable before allocating the per-netns hook ops copy via kmemduparray. This leaves a window where the...

CVE-2026-64075 fprobe: Fix unregister_fprobe() to wait for RCU grace period

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...

EUVD-2026-45648

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-2026-64075

CVE-2026-64075 is a use-after-free vulnerability in the Linux kernel's fprobe subsystem (part of KProbes tracing). The root cause is that commit 4346ba1604093 rewrote fprobe on the function-graph tracer to use an RCU hash list but forgot to wait for an RCU grace period in unregister_fprobe(), all...

EUVD-2026-45646

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 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-2026-64063

CVE-2026-64063 affects the Linux kernel's netfslib (network file systems library) subsystem. The bug is in netfs_perform_write(): when a partially written streaming-write folio is overwritten by a subsequent write(), the function fails to discard the attached netfs_folio struct and mishandles par...