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CVE-2023-52784 is a vulnerability in the Linux kernel bonding subsystem. A bonding device with no members can have a LAPB-over-Ethernet dependent device attached. Enslaving a non-Ethernet network device can then cause the bonding master device's hardware type to change while dependent devices remain active and retain assumptions about the original physical-device type. Subsequent packet-header handling can invoke skb_push() with insufficient headroom, triggering an skb underflow assertion. The upstream fix closes the bonding device in bond_setup_by_slave() before its type may be changed, causing dependent devices to be removed through normal network-device event handling.
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Improper device-state handling in Linux kernel bonding setup.
Linux kernel bonding-driver vulnerability addressed by stopping the device in bond_setup_by_slave().
Linux kernel bonding driver flaw related to device handling in bond_setup_by_slave().
Unknown.
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.