Loading vulnerability…
CVE-2022-48828 is an integer-underflow flaw in the Linux kernel NFS server (NFSD) attribute-setting path. NFSv3 and NFSv4 represent file sizes as unsigned 64-bit values, whereas the Linux kernel iattr.ia_size field is a signed 64-bit loff_t. NFSD could decode a client-supplied unsigned file size greater than S64_MAX directly into ia_size. The signed conversion underflows, producing an invalid negative size value. The fix adds validation in the common nfsd_setattr() path to reject file-size values that exceed the representable signed range.
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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel NFSD vulnerability caused by an ia_size underflow.
A Linux kernel NFSD integer-underflow issue involving ia_size, fixed in the Red Hat kernel-rt update.
A Linux kernel NFSD issue involving an ia_size underflow.
A Linux kernel NFSD vulnerability involving an ia_size underflow condition.
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.