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CVE-2023-1838 is a use-after-free vulnerability in the Linux kernel virtio networking subsystem. The vhost_net_set_backend() path in drivers/vhost/net.c performs two fdget() operations, creating an erroneous file-reference handling condition that can leave a referenced object freed while it remains in use.
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No public exploit code observed for this vulnerability.
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Linux kernel vhost-net use-after-free involving two fdget() operations in vhost_net_set_backend().
Linux kernel vhost-net use-after-free condition in vhost_net_set_backend().
Possible use-after-free in the Linux kernel vhost_net_set_backend() path involving two fdget() calls.
Potential use-after-free vulnerability in Linux kernel vhost_net_set_backend() involving two fdget() operations.
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.