PT-2026-34400

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter ctnetlink component where manual range and mask validations are used instead of netlink policy annotations. This can lead to undefined behavior when the...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-006892)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006892 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: fix refcount leak on table dump There is a reference count leak in...

SUSE CVE-2026-31414

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

EUVD-2026-21932

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

CVE-2026-31414

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

CVE-2026-31414

CVE-2026-31414 (Linux kernel netfilter nf_conntrack_expect) The vulnerability arises from using nfct_help() without holding a reference to the master conntrack, leading to unsafe references when the helper is dumped via ctnetlink and /proc. The fix switches to using exp->master->helper in t...

CVE-2026-31414

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

CVE-2026-31414 netfilter: nf_conntrack_expect: use expect->helper

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006744)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006744 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: fix refcount leak on table dump There is a reference count leak in...

SUSE CVE-2026-31407

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

EUVD-2026-19197

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

CVE-2026-31407

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

CVE-2026-31407 netfilter: conntrack: add missing netlink policy validations

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

CVE-2026-31407

The CVE-2026-31407 entry covers a Linux kernel netfilter conntrack issue where missing netlink policy validations allow a local attacker to craft input that can cause a slab-out-of-bounds access in sctp/ctnetlink, via using unvalidated CTA_PROTOINFO_SCTP_STATE values and accessing ct->master-&...

CVE-2026-31407

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

CVE-2026-31407

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

PT-2026-30575

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in its netfilter component related to conntrack and missing netlink policy validations. Specifically, the nlattr to sctp function improperly handles...

Linux Distros Unpatched Vulnerability : CVE-2026-23458

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: ctnetlink: fix use-after-free in ctnetlinkdumpexpct ctnetlinkdumpexpct stores a conntrack pointer in cb-data for the netlink dump callback...

SUSE CVE-2026-23458

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: fix use-after-free in ctnetlinkdumpexpct ctnetlinkdumpexpct stores a conntrack pointer in cb-data for the netlink dump callback ctnetlinkexpctdumptable, but drops the conntrack reference immediately after...

CVE-2026-23458

A flaw was found in the Linux kernel's netfilter connection tracking ctnetlink component. This vulnerability, known as a use-after-free, occurs when the system attempts to access a memory location after it has been deallocated, which can lead to unpredictable behavior. A local attacker could...