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CVE-2022-50865 is a signed integer overflow vulnerability in the Linux kernel TCP subsystem's tcp_add_backlog() function. The function calculates a backlog limit by adding the integer-typed struct sock fields sk_rcvbuf and sk_sndbuf and an additional 64 KiB. This calculation can exceed the maximum signed int value and overflow. The corrective change reduces the limit budget by halving the send-buffer contribution, reflecting that ACK packets are substantially smaller than payload packets.
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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 public exploits tracked yet. Mallory keeps watching.
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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Vulnerability referenced by the advisory; no individual description is provided.
A Linux kernel TCP vulnerability involving a signed integer overflow in tcp_add_backlog().
A Linux kernel TCP vulnerability caused by a signed integer overflow in tcp_add_backlog().
A Linux kernel vulnerability involving a signed integer overflow in tcp_add_backlog().
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.