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CVE-2024-27393 is a resource-leak vulnerability in the Linux kernel Xen netfront network driver. Receive-path socket buffers associated with page-pool-backed memory were not marked for recycling with skb_mark_for_recycle(). Consequently, page-pool pages may not be returned for reuse, causing a memory leak. The issue existed in kernel versions where the prior page-pool release handling was absent and remained observable after page-pool leak detection was introduced in Linux kernel 6.8.
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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.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel Xen netfront issue caused by a missing skb_mark_for_recycle call.
A Linux kernel Xen netfront issue involving a missing skb_mark_for_recycle call, fixed in the Red Hat kernel-rt update.
A Linux kernel Xen netfront driver vulnerability addressed by adding a missing skb_mark_for_recycle call.
A flaw in the Linux kernel xen-netfront network driver involving a missing skb_mark_for_recycle call.
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.