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CVE-2026-72253

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-72253

Key Details

CVECVE-2026-72253
CVSS Score / Version
7.5 (High) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Prose
attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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 relies on the skb_dst() to be present if

sip_external_media is set to 1 (which is disabled by default as a module

parameter).

This effectively disables the sip_external_media toggle for these

subsystems without resulting in a crash. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-72253
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-72253

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