netfilter: xt_multiport: validate range encoding in checkentry

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SUSE CVE-2026-31681

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

CVE-2026-31681

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

CVE-2026-31681 netfilter: xt_multiport: validate range encoding in checkentry

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

EUVD-2026-25648

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

CVE-2026-31681

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

CVE-2026-31681

CVE-2026-31681 affects the Linux kernel netfilter xt_multiport component. The issue is in ports_match_v1() where a non-zero pflags entry is treated as a range start, causing the end of the range to be consumed incorrectly and potentially reading past the last ports[] element when a malformed rule...

CVE-2026-31681

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports element as the range end. The checkentry path...

PT-2026-35141

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter xt multiport component where the checkentry path fails to validate range encoding. The ports match v1 function treats any non-zero pflags entry as the...

Linux Distros Unpatched Vulnerability : CVE-2026-31681

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: xtmultiport: validate range encoding in checkentry portsmatchv1 treats any non-zero pflags entry as the start of a port range and unconditionally...

CVE-2023-20190

A vulnerability in the classic access control list ACL compression feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass the protection that is offered by a configured ACL on an affected device. This vulnerability is due to incorrect destination address range...