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 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

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 ...

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...

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...

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-2026-73021

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...

CVE-2010-2831

Unspecified vulnerability in the NAT for SIP implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1 allows remote attackers to cause a denial of service device reload via transit traffic on UDP port 5060, aka Bug ID CSCtf17624...