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CVE-2023-0461 is a use-after-free in the Linux kernel net/ulp handling of listening TCP sockets. The flaw affects the icsk_ulp_data member of struct inet_connection_sock when CONFIG_TLS or CONFIG_XFRM_ESPINTCP is enabled. With CONFIG_TLS enabled, a user can install a struct tls_context on a connected TCP socket through the TCP_ULP setsockopt operation. If that socket is disconnected and repurposed as a listening socket, its TLS context is not cleared. Sockets accepted from the listener can inherit the stale context, resulting in use of freed memory.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An existing Linux kernel memory-corruption vulnerability used by the researchers as a test case to demonstrate CopyKat-based privilege-escalation exploit chains.
Linux kernel ULP socket use-after-free vulnerability.
Linux kernel ULP socket use-after-free vulnerability.
Linux kernel ULP listening-socket use-after-free.
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.