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CVE-2024-35973 is an uninitialized-memory vulnerability in the Linux kernel Geneve tunneling transmit path, affecting geneve_xmit_skb() and geneve_xmit(). Inadequate VLAN-aware header validation permits a VLAN tag supplied through AF_PACKET to cause the network header to reference an incorrect location. Where the skb protocol is not IPv4 or IPv6, pskb_inet_may_pull() performs no validation, and the skb linear region may be shorter than expected. Subsequent Geneve processing can use uninitialized data. The fix adds skb_vlan_inet_prepare() to perform complete MAC and VLAN-aware validation before Geneve packet processing.
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A medium-severity Linux kernel Geneve tunneling flaw caused by insufficient packet/VLAN header validation. A locally privileged attacker able to send crafted packets through AF_PACKET could trigger use of uninitialized memory in the Geneve transmit path, resulting in a denial of service.
Linux kernel vulnerability addressed by the SUSE SLES 12 SP5 kernel update.
Query your assets running an affected version, and investigate the blast radius.
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.