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CVE-2024-35839 is a use-after-free vulnerability in the Linux kernel netfilter bridge path. While an skb awaits ARP resolution in a neighbour ARP queue, its skb device can differ from the neighbour device, including when a DNATed packet is bridged between virtual Ethernet interfaces. The bridge Netfilter metadata retained a raw physical-input net_device reference. That device could be freed while the queued skb remained reachable because neighbour-device cleanup does not necessarily remove skbs queued against another device. Subsequent bridge transmission could restore skb->dev from the stale reference and dereference it. The fix replaces the stored net_device pointer with an interface index and performs an RCU-safe device lookup; packets are dropped when the original device is unavailable.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel netfilter bridge interface-reference handling flaw.
Linux kernel netfilter bridge handling flaw involving nf_bridge_info fixed in the Red Hat kernel-rt update.
Linux kernel netfilter bridge issue involving replacement of physindev with physinif in nf_bridge_info.
Linux kernel Netfilter bridge interface-reference handling flaw.
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.