Loading vulnerability…
CVE-2024-26640 is a vulnerability in the Linux kernel's TCP receive (rx) zerocopy implementation. The flaw arises because the kernel allowed mapping of pages owned by a filesystem (such as ext4) into the TCP rx zerocopy path, which is only intended for pages allocated by NIC drivers. Specifically, the can_map_frag() function did not check if the page was a compound page or if page->mapping was non-NULL, leading to the possibility of mapping filesystem-backed pages. This could be triggered by using sendfile() to send data from a file over a TCP socket, resulting in a kernel panic.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux TCP receive-zero-copy validation flaw.
Linux kernel TCP receive zero-copy validation issue fixed by added sanity checks.
Linux kernel TCP receive zero-copy input-validation flaw addressed by added sanity checks.
Linux kernel TCP vulnerability addressed by adding sanity checks to receive-side zero-copy handling.
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.