EUVD-2026-71496

In the Linux kernel, the following vulnerability has been resolved: tipc: avoid busy looping in tipcexitnet Blamed commit introduced a busy-wait loop in tipcexitnet to wait for pending UDP bearer cleanup works to complete: while atomicread&tn-wqcount condresched; This loop can busy-wait for a lon...

CVE-2026-80866

CVE-2026-80866 affects the Linux kernel TIPC subsystem (specifically tipc_exit_net()). A prior commit introduced a busy-wait loop that spins while waiting for pending UDP bearer cleanup work to complete. When cond_resched() is a NOP—common for high-priority tasks or kernels built with CONFIG_PREE...

PT-2026-91783

In the Linux kernel, the following vulnerability has been resolved: tipc: avoid busy looping in tipc exit net Blamed commit introduced a busy-wait loop in tipc exit net to wait for pending UDP bearer cleanup works to complete: while atomic read&tn-wq count cond resched; This loop can busy-wait fo...

CVE-2026-80866: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tipc: avoid busy looping in tipcexitnet Blamed commit introduced a busy-wait loop in tipcexitnet to wait for pending UDP bearer cleanup works to complete: while atomicread&tn-wqcount condresched; This loop can busy-wait for a lon...

CVE-2026-74283

A flaw was found in the Linux kernel's Transparent Inter-Process Communication TIPC version 2 component. This vulnerability allows a local unprivileged attacker to bypass administrative permission checks when performing network link operations. Consequently, the attacker can modify critical TIPC...

CVE-2026-72404

A flaw was found in the Linux kernel's TIPC UDP media bearer. This vulnerability, a Use-After-Free UAF condition, occurs because certain data structures are prematurely destroyed during teardown without proper synchronization with concurrent operations. A local attacker with network access could...

CVE-2026-72404

In the Linux kernel, the following vulnerability has been resolved: tipc: fix UAF in cleanupbearer due to premature dstcachedestroy TIPC UDP media bearer teardown calls dstcachedestroy on its replicast caches before calling synchronizenet to wait for concurrent RCU readers transmitters to finish:...

EUVD-2026-59303

In the Linux kernel, the following vulnerability has been resolved: tipc: fix UAF in cleanupbearer due to premature dstcachedestroy TIPC UDP media bearer teardown calls dstcachedestroy on its replicast caches before calling synchronizenet to wait for concurrent RCU readers transmitters to finish:...

PT-2026-72592

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF issue exists in the TIPC UDP media bearer teardown process. The cleanup bearer function calls dst cache destroy on replicast caches before calling synchronize net,...

CVE-2026-68323

A flaw was found in the Linux kernel's TIPC Transparent Inter-Process Communication module. A race condition exists in the handling of UDP bearer replicast list updates. This can occur when tipcudprcastadd and cleanupbearer functions attempt to update the list concurrently without proper...

AZL-95187 CVE-2026-68323 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: tipc: serialize udp bearer replicast list updates tipcudprcastadd and cleanupbearer both update ub-rcast.list with listaddrcu / listdelrcu, but nothing serializes them. The add runs from the encap receive softirq via...

CVE-2026-68323

In the Linux kernel, the following vulnerability has been resolved: tipc: serialize udp bearer replicast list updates tipcudprcastadd and cleanupbearer both update ub-rcast.list with listaddrcu / listdelrcu, but nothing serializes them. The add runs from the encap receive softirq via...

CVE-2026-68323 tipc: serialize udp bearer replicast list updates

In the Linux kernel, the following vulnerability has been resolved: tipc: serialize udp bearer replicast list updates tipcudprcastadd and cleanupbearer both update ub-rcast.list with listaddrcu / listdelrcu, but nothing serializes them. The add runs from the encap receive softirq via...

CVE-2026-68323

A race condition was found in the Linux kernel TIPC UDP bearer replication list handling (tipc_udp_rcast_add and cleanup_bearer). Without proper serialization, updates to ub->rcast.list can corrupt the list, potentially triggering a kernel bug and denial of service. The fix adds a spinlock to ...

EUVD-2026-55424

In the Linux kernel, the following vulnerability has been resolved: tipc: serialize udp bearer replicast list updates tipcudprcastadd and cleanupbearer both update ub-rcast.list with listaddrcu / listdelrcu, but nothing serializes them. The add runs from the encap receive softirq via...

SUSE CVE-2026-64543

In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free of the discoverer in tipcdiscrcv bearerdisable frees b-disc with tipcdiscdelete's plain kfree, but tipcdiscrcv still dereferences b-disc in RX softirq under rcureadlock tipcudprecv - tipcrcv - tipcdiscrcv...

Linux Distros Unpatched Vulnerability : CVE-2026-64543

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tipc: fix use-after-free of the discoverer in tipcdiscrcv bearerdisable frees b-disc with tipcdiscdelete's plain kfree, but tipcdiscrcv still dereferences b-di...

AZL-94047 CVE-2026-64543 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free of the discoverer in tipcdiscrcv bearerdisable frees b-disc with tipcdiscdelete's plain kfree, but tipcdiscrcv still dereferences b-disc in RX softirq under rcureadlock tipcudprecv - tipcrcv - tipcdiscrcv...

CVE-2026-64543

CVE-2026-64543 — Linux TIPC use-after-free fixed . The vulnerability occurs in tipc_disc_rcv() where the discoverer object is freed with kfree while still referenced under an RCU read-side critical section, allowing a local unprivileged user to crash the system via TIPCv2 genl interactions. The f...

CVE-2026-64543 tipc: fix use-after-free of the discoverer in tipc_disc_rcv()

In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free of the discoverer in tipcdiscrcv bearerdisable frees b-disc with tipcdiscdelete's plain kfree, but tipcdiscrcv still dereferences b-disc in RX softirq under rcureadlock tipcudprecv - tipcrcv - tipcdiscrcv...