Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: brnetfilter: do not check the confirmed bit in brnflocalin after confirmation. When sending a broadcast packet to a tap device, which is added to a bridge, the brnflocalin function is called to confirm the conntrack. I...

The vulnerability of the nf_conntrack_hash_check_insert() function in the net/netfilter/nf_conntrack_core.c module of the Linux kernel’s netfilter subsystem allows a hacker to induce a service failure.

The vulnerability of the nfconntrackhashcheckinsert function in the net/netfilter/nfconntrackcore.c module of the netfilter component of the Linux operating system is related to improper control of resource identifiers “resource injection”. Exploiting this vulnerability could allow a attacker to...

CVE-2025-39894

The CVE-2025-39894 issue is in the Linux kernel netfilter br_netfilter path: br_nf_local_in() confirms conntrack during handling of a broadcast to a tap device added to a bridge. If another conntrack with the same hash is added, a warning can be emitted. The root cause is br_nf_local_in() using t...

CVE-2025-39894 netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm

In the Linux kernel, the following vulnerability has been resolved: netfilter: brnetfilter: do not check confirmed bit in brnflocalin after confirm When send a broadcast packet to a tap device, which was added to a bridge, brnflocalin is called to confirm the conntrack. If another conntrack with...

SUSE CVE-2022-48974

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: fix using thiscpuadd in preemptible Currently in nfconntrackhashcheckinsert, when it fails in nfctextvalidpre/post, NFCTSTATINC will be called in the preemptible context, a call trace can be triggered: BUG:...

DEBIAN-CVE-2022-48974

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: fix using thiscpuadd in preemptible Currently in nfconntrackhashcheckinsert, when it fails in nfctextvalidpre/post, NFCTSTATINC will be called in the preemptible context, a call trace can be triggered: BUG:...

kernel: netfilter: conntrack: fix using __this_cpu_add in preemptible

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: fix using thiscpuadd in preemptible Currently in nfconntrackhashcheckinsert, when it fails in nfctextvalidpre/post, NFCTSTATINC will be called in the preemptible context, a call trace can be triggered: BUG:...