CVE-2024-41040 is a use-after-free vulnerability in the Linux kernel net/sched connection-tracking action path. When conntrack confirmation resolves a connection clash, the conntrack entry can be dropped and freed, but the stale entry may subsequently be passed to the act_ct flow-table processing routine. A read of the freed conntrack-associated object occurs during further traffic-control processing. The upstream fix reacquires the conntrack entry from the socket buffer after conntrack confirmation, preventing use of an entry that may have been discarded during clash resolution.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A locally exploitable Unity Linux/UOS Server vulnerability requiring low privileges and high attack complexity, with potential high impact to confidentiality, integrity, and availability.
A Linux kernel net/sched vulnerability involving a use-after-free when resolving a clash.
Use-after-free vulnerability in Linux kernel network traffic scheduling while resolving a classifier clash.
A vulnerability included in the CVE list for this OpenShift Container Platform 4.15.43 security update; no vulnerability details are provided in the content.
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.