Mitel 6000 - OS Command Injection

A vulnerability in the Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones through 6.4 SP4 R6.4.0.4006, and the 6970 Conference Unit through 6.4 SP4 R6.4.0.4006 or version V1 R0.1.0, could allow an unauthenticated attacker to conduct a command injection attack due to insufficient paramete...

CVE-2026-74569

A flaw was found in the Linux kernel's netfilter Session Initiation Protocol SIP connection tracking module nfconntracksip. A remote attacker could send specially crafted SIP messages that cause an integer overflow during Network Address Translation NAT rewrite delta calculations. This overflow...

CVE-2026-72253

A flaw was found in the Linux kernel's Netfilter Session Initiation Protocol SIP connection tracking helper. This vulnerability occurs when network traffic control tc ingress or Open vSwitch openvswitch subsystems are active, and a specific media handling feature sipexternalmedia is enabled. The...

CVE-2026-72251

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the Session Initiation Protocol SIP Network Address Translation NAT helper. This vulnerability occurs when a cloned packet buffer SKB is reallocated, but the system fails to update the data pointer, leading to the use...

Linux Distros Unpatched Vulnerability : CVE-2026-72251

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: nfnatsip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a...

UBUNTU-CVE-2026-74569

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: widen NAT rewrite delta to s32 in siphelptcp siphelptcp stores the size change of each NAT-rewritten SIP message in s16 diff and accumulates it in s16 tdiff, but a single message can grow by more than...

CVE-2026-74569

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: widen NAT rewrite delta to s32 in siphelptcp siphelptcp stores the size change of each NAT-rewritten SIP message in s16 diff and accumulates it in s16 tdiff, but a single message can grow by more than...

CVE-2026-74569 netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: widen NAT rewrite delta to s32 in siphelptcp siphelptcp stores the size change of each NAT-rewritten SIP message in s16 diff and accumulates it in s16 tdiff, but a single message can grow by more than...

CVE-2026-74569

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: widen NAT rewrite delta to s32 in siphelptcp siphelptcp stores the size change of each NAT-rewritten SIP message in s16 diff and accumulates it in s16 tdiff, but a single message can grow by more than...

CVE-2026-74569

CVE-2026-74569 affects the Linux kernel netfilter nf_conntrack_sip path. The issue stems from NAT rewrite delta handling in sip_help_tcp(), where diff/tdiff was stored in 16-bit fields and could overflow within large SIP messages, causing a read past the skb tail. The fix widens diff, tdiff, and ...

CVE-2026-72253

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: validate skbdst before accessing it tc ingress and openvswitch do not guarantee routing information to be available. These subsystems use the conntrack helper infrastructure, and the SIP helper relies o...

UBUNTU-CVE-2026-72251

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnatsip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a potential memory bug and header corruption involving the SIP NAT helpe...

EUVD-2026-59152

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: validate skbdst before accessing it tc ingress and openvswitch do not guarantee routing information to be available. These subsystems use the conntrack helper infrastructure, and the SIP helper relies o...

CVE-2026-72253

Summary (CVE-2026-72253) : In the Linux kernel, the netfilter nf_conntrack_sip path is fixed to validate skb_dst() before use. The SIP helper relies on skb_dst() being present when sip_external_media is enabled, but tc ingress and Open vSwitch may not guarantee routing information, so the toggle ...

CVE-2026-72251 netfilter: nf_nat_sip: reload possible stale data pointer

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnatsip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a potential memory bug and header corruption involving the SIP NAT helpe...

CVE-2026-72251 netfilter: nf_nat_sip: reload possible stale data pointer

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnatsip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a potential memory bug and header corruption involving the SIP NAT helpe...

CVE-2026-72251

CVE-2026-72251 concerns the Linux kernel netfilter nf_nat_sip path. The issue is a memory-pointer/buffer handling flaw: if skb_ensure_writable() reallocates a cloned/fragmented skb, nf_nat_sip() may not update the destination pointer (dptr ) to the new buffer, risking a stale data pointer and pot...

PT-2026-72439

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf nat sip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a potential memory bug and header corruption involving the SIP NAT...

PT-2026-73021

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf conntrack sip: widen NAT rewrite delta to s32 in sip help tcp sip help tcp stores the size change of each NAT-rewritten SIP message in s16 diff and accumulates it in s16 tdiff, but a single message can grow by more...

PT-2026-72441

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf conntrack sip: validate skb dst before accessing it tc ingress and openvswitch do not guarantee routing information to be available. These subsystems use the conntrack helper infrastructure, and the SIP helper relie...