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CVE-2023-51780 is a use-after-free race condition in the Linux kernel ATM networking subsystem prior to Linux 6.6.8. The flaw is in do_vcc_ioctl() in net/atm/ioctl.c, where processing of the SIOCINQ ioctl can race with vcc_recvmsg() and access ATM virtual-circuit state after it has been freed. SIOCINQ returns the number of unread bytes in the receive buffer; the race can cause it to operate on stale state and return an invalid buffer-size value.
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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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel ATM ioctl use-after-free vulnerability.
Linux kernel use-after-free vulnerability in ATM ioctl handling.
Linux kernel ATM ioctl use-after-free vulnerability.
Linux kernel ATM ioctl use-after-free vulnerability.
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.