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CVE-2024-26638 is a Linux kernel vulnerability in the Network Block Device (NBD) driver. The NBD reply-receive path creates a struct msghdr without completely initializing it. Consequently, the msg_get_inq member may retain an uninitialized value that is consumed during TCP receive processing. The upstream correction fully zero-initializes struct msghdr, including fields added in newer kernel versions.
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Linux kernel Network Block Device message-header initialization flaw.
Linux kernel Network Block Device (nbd) flaw addressed by completely initializing struct msghdr.
A low-severity Linux kernel Network Block Device (NBD) vulnerability caused by incomplete initialization of a struct msghdr. It was resolved in upstream/stable kernel releases and distributed through Fedora and Red Hat Enterprise Linux updates.
A Linux kernel Network Block Device (NBD) flaw caused by incomplete initialization of struct msghdr, which can result in use of an uninitialized value during TCP message reception and a high availability impact.
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.