EUVD-2026-93345

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: insert mcg into mcgtree only after rxemcastadd succeeds rxegetmcg publishes a newly allocated multicast group in rxe-mcgtree before programming the backing Ethernet multicast address with rxemcastadd, which runs outside...

CVE-2026-98360 RDMA/rxe: insert mcg into mcg_tree only after rxe_mcast_add() succeeds

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: insert mcg into mcgtree only after rxemcastadd succeeds rxegetmcg publishes a newly allocated multicast group in rxe-mcgtree before programming the backing Ethernet multicast address with rxemcastadd, which runs outside...

SUSE SLES12 Security Update : kernel (Live Patch 86 for SUSE Linux Enterprise 12 SP5) (SUSE-SU-2026:4192-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:4192-1 advisory. This update for the SUSE Linux Enterprise Kernel 4.12.14-122.323 fixes one security issue: The following security issue was fixed: - CVE-2026-64423:...

Security update for the Linux Kernel (Live Patch 86 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.323 fixes one security issue: The following security issue was fixed: CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device destruction bsc1275458. Patch Instructions: To install this SUSE update use the SUSE...

SUSE-SU-2026:23810-1 Security update for the Linux Kernel RT (Live Patch 24 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-47.1 fixes various security issues: The following security issues were fixed: - CVE-2026-46150: fanotify: fix false positive on permission events bsc1267388. - CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098740)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098740 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: Fix use-after-free when processing MLD queries When processing an MLD query, a point...

ipv4: igmp: remove multicast group from hash table on device destruction

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SUSE CVE-2026-64423

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast list and calls ipmaput on each membership, scheduling them for RCU...

CVE-2026-64423 ipv4: igmp: remove multicast group from hash table on device destruction

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast list and calls ipmaput on each membership, scheduling them for RCU...

CVE-2026-64423

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast list and calls ipmaput on each membership, scheduling them for RCU...

CVE-2026-64423

CVE-2026-64423 affects the Linux kernel IPv4 IGMP multicast handling. The root cause is that, when a device is destroyed, ip_mc_destroy_dev() decrements the multicast membership refcount but fails to unlink the membership from the device’s multicast hash table (mc_hash) before RCUs reclaim the ob...

EUVD-2026-48967

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast list and calls ipmaput on each membership, scheduling them for RCU...

CVE-2026-64423 ipv4: igmp: remove multicast group from hash table on device destruction

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast list and calls ipmaput on each membership, scheduling them for RCU...

PT-2026-64644

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the IPv4 IGMP implementation during device destruction under RTNL. The function ip mc destroy dev iterates through the multicast list and calls ip ma put...

Linux Distros Unpatched Vulnerability : CVE-2026-64423

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: igmp: remove multicast group from hash table on device destruction When a device is destroyed under RTNL, ipmcdestroydev iterates through the multicast li...

SUSE CVE-2026-64137

In the Linux kernel, the following vulnerability has been resolved: smb: client: require net admin for CIFS SWN netlink CIFSGENLCMDSWNNOTIFY is the userspace witness-notify command. The intended sender is the cifs.witness helper, but the generic-netlink operation currently has no capability flag,...

CVE-2026-64137

In the Linux kernel, the following vulnerability has been resolved: smb: client: require net admin for CIFS SWN netlink CIFSGENLCMDSWNNOTIFY is the userspace witness-notify command. The intended sender is the cifs.witness helper, but the generic-netlink operation currently has no capability flag,...

EUVD-2026-45822

In the Linux kernel, the following vulnerability has been resolved: smb: client: require net admin for CIFS SWN netlink CIFSGENLCMDSWNNOTIFY is the userspace witness-notify command. The intended sender is the cifs.witness helper, but the generic-netlink operation currently has no capability flag,...

CVE-2026-64137 smb: client: require net admin for CIFS SWN netlink

In the Linux kernel, the following vulnerability has been resolved: smb: client: require net admin for CIFS SWN netlink CIFSGENLCMDSWNNOTIFY is the userspace witness-notify command. The intended sender is the cifs.witness helper, but the generic-netlink operation currently has no capability flag,...

CVE-2026-64137

The CVE-2026-64137 issue affects the Linux kernel CIFS client (SWN netlink). The vulnerability arises because CIFS_GENL_CMD_SWN_NOTIFY and related SWN multicast group handling lack proper capability checks, allowing an unprivileged local process to send witness notifications or join the multicast...