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CVE-2024-39487 is an out-of-bounds read vulnerability in the Linux kernel bonding subsystem's bond_option_arp_ip_targets_set() function. When newval->string is empty, advancing the pointer by one byte places it beyond the string allocation. Subsequent IPv4 address parsing through in4_pton() invokes strlen() on that pointer, resulting in an invalid kernel-memory read. The issue was reproduced through the bonding sysfs option-write path, with KASAN detecting a one-byte slab-out-of-bounds read. The fix validates the string length before using it.
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An out-of-bounds read in the Linux kernel bonding subsystem occurs when bond_option_arp_ip_targets_set() processes an empty string. The reference assigns a CVSS v3 score of 7.1, indicating local exploitation with low privileges and potential high confidentiality and availability impacts. The Google COS security update addresses affected Lakitu kernel packages.
A locally exploitable vulnerability requiring low privileges, with high confidentiality and availability impact according to the listed CVSS v3 vector. The specific affected component and technical flaw are not described.
Linux kernel bonding-driver out-of-bounds read vulnerability.
Linux kernel bonding-driver out-of-bounds read fixed in the updated image.
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.