SUSE-SU-2026:23675-1 Security update for the Linux Kernel RT (Live Patch 16 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.37.1 fixes various security issues: The following security issues were fixed: - CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device destruction bsc1275458. - CVE-2026-68138: net/sched: serialize qdiscrtablist...

Security Advisory 0159

Security Advisory 0159 . CSAF PDF Date: September 9, 2026 Revision | Date | Changes ---|---|--- 1.0 | September 9, 2026 | Initial release 1.1 | September 22, 2026 | CSAF JSON file added The CVE-ID tracking this issue: CVE-2026-73462 CVSSv3.1 Base Score: 6.5...

CVE-2026-80842 net: bridge: mcast: fix use-after-free of a master VLAN's multicast context

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context brmulticasttoggleonevlan clears BRVLFLAGMCASTENABLED under br-multicastlock before stopping a VLAN's multicast context. That is the teardown handshake:...

SUSE CVE-2026-72321

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential memory leaks in igmpmodtimer and igmpstoptimer When a timer is deleted and not re-armed in igmpmodtimer, or stopped in igmpstoptimer, the code currently decrements the reference counter of the multicast...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098912)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098912 advisory. 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 destroy...

SUSE CVE-2026-72323

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv, leading to a Use-After-Free in the IGMP timer callback. During device...

CVE-2026-72321

A flaw was found in the Linux kernel's IPv4 Internet Group Management Protocol IGMP component. Incorrect handling of reference counts in the igmpmodtimer and igmpstoptimer functions can occur when a multicast list entry is concurrently removed. This can lead to a memory leak of the im structure,...

CVE-2026-72323

A flaw was found in the Linux kernel. A race condition exists between network device teardown and Internet Group Management Protocol IGMP query processing. This can lead to a Use-After-Free UAF vulnerability in the igmpgqstarttimer function, which could allow an attacker to trigger a kernel panic...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102005)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102005 advisory. 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 destroy...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099691)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099691 advisory. 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 destroy...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100494)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100494 advisory. 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 destroy...

CVE-2026-72323

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv, leading to a Use-After-Free in the IGMP timer callback. During device...

CVE-2026-72321

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential memory leaks in igmpmodtimer and igmpstoptimer When a timer is deleted and not re-armed in igmpmodtimer, or stopped in igmpstoptimer, the code currently decrements the reference counter of the multicast...

AZL-96117 CVE-2026-72321 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential memory leaks in igmpmodtimer and igmpstoptimer When a timer is deleted and not re-armed in igmpmodtimer, or stopped in igmpstoptimer, the code currently decrements the reference counter of the multicast...

CVE-2026-72323

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv, leading to a Use-After-Free in the IGMP timer callback. During device...

UBUNTU-CVE-2026-72323

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv, leading to a Use-After-Free in the IGMP timer callback. During device...

UBUNTU-CVE-2026-72321

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential memory leaks in igmpmodtimer and igmpstoptimer When a timer is deleted and not re-armed in igmpmodtimer, or stopped in igmpstoptimer, the code currently decrements the reference counter of the multicast...

CVE-2026-72321

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential memory leaks in igmpmodtimer and igmpstoptimer When a timer is deleted and not re-armed in igmpmodtimer, or stopped in igmpstoptimer, the code currently decrements the reference counter of the multicast...

CVE-2026-72323

CVE-2026-72323 — Linux kernel igmp UAF vulnerability : A race between device teardown (inetdev_destroy) and IGMP query processing (igmp_rcv) can cause a Use-After-Free in the IGMP timer callback when the timer is re-armed. The in_device memory is freed via RCU after its refcount reaches 0, but ig...

EUVD-2026-59222

In the Linux kernel, the following vulnerability has been resolved: ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv, leading to a Use-After-Free in the IGMP timer callback. During device...