CVE-2026-72253

highCVSS 7.5covered by 1 sourcefirst seen 2026-08-15

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.

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Exploitation outlook

Low exploitation risk0.60% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-72253: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_si…nvd · 2026-08-15

External references

NVD record for CVE-2026-72253

CVE.org record

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