Loading vulnerability…
CVE-2026-46323 is a use-after-free vulnerability in the Linux kernel's Generic Receive Offload (GRO) processing. The skb_gro_receive() function can transfer packet fragments between socket buffers without checking zerocopy status, including the SKBFL_MANAGED_FRAG_REFS flag. Buffers carrying this flag do not hold references to their fragment pages. Appending these fragments to another buffer without correcting page reference counts can leave references to freed pages. The fix prevents merging when either the source buffer or the last buffer in the GRO chain is zerocopy.
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.
28 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel use-after-free vulnerability in Generic Receive Offload (GRO) processing caused by merging zerocopy socket-buffer fragments without properly maintaining page reference counts. The listed CVSS v3 score is 7.8, indicating local exploitation requiring low privileges, with potentially high confidentiality, integrity, and availability impacts. The fix prevents merging when either relevant socket buffer is zerocopy.
A use-after-free vulnerability in the Linux kernel net/gro subsystem resulting from improper handling of zero-copy socket buffers.
A use-after-free vulnerability in Linux kernel net/gro caused by improper handling of zero-copy socket buffers.
A use-after-free vulnerability in the Linux kernel net/gro component caused by improper handling of zerocopy SKBs.
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.