Linux kernel BPF invalid GSO type emission via bpf_clone_redirect
CVE-2025-68725 is a Linux kernel vulnerability in the BPF test infrastructure and networking path. A malformed skb could be emitted to the networking stack when a BPF program, triggered via the BPF test infrastructure, redirected a packet to the loopback device using bpf_clone_redirect(). The root cause was convert___skb_to_skb() populating gso_segs and gso_size without setting gso_type, resulting in inconsistent and invalid GSO metadata. This malformed state reached netif_skb_features() and gso_features_check(), where it triggered skb_warn_bad_offload(). The upstream fix rejects such malformed packets at bpf_clone_redirect() rather than allowing them to proceed further into the GSO handling path.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.