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CVE-2023-23455 is a type-confusion vulnerability in the Linux kernel ATM traffic-control scheduler's atm_tc_enqueue function in net/sched/sch_atm.c. A non-negative return value can be interpreted as the TC_ACT_SHOT action condition rather than as a valid packet-classification result. The resulting invalid handling can trigger a kernel denial of service. The issue affects Linux kernel versions through 6.1.4 and is recorded as fixed upstream in 6.2-rc3.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel ATM traffic-control type-confusion vulnerability enabling denial of service.
Linux kernel ATM traffic-control type-confusion denial-of-service vulnerability.
Linux kernel traffic-control type-confusion flaw that can cause denial of service in atm_tc_enqueue().
Linux kernel ATM traffic-control type-confusion denial-of-service 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.