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...

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...

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...

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...

CVE-2026-72323 ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()

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-2026-72323 ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()

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-2026-72323

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...

CVE-2026-72321 ipv4: igmp: Fix potential memory leaks in igmp_mod_timer() and igmp_stop_timer()

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 ipv4: igmp: Fix potential memory leaks in igmp_mod_timer() and igmp_stop_timer()

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...

EUVD-2026-59220

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

CVE-2026-72321 affects the Linux kernel’s IGMP timer handling (ipv4: igmp). The root cause is a memory leak when deleting or stopping timers in igmp_mod_timer() and igmp_stop_timer(): refcount_dec(&im->refcnt) can drop the group entry im to zero on an RC reader path, leaving the im object leak...

Linux Distros Unpatched Vulnerability : CVE-2026-72323

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: igmp: Fix potential UAF in igmpgqstarttimer A race condition exists between device teardown inetdevdestroy and incoming IGMP query processing igmprcv,...

PT-2026-72511

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

Linux Distros Unpatched Vulnerability : CVE-2026-72321

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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,...

PT-2026-72509

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

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...