Loading vulnerability…
CVE-2026-53399 is a use-after-free vulnerability in the Linux kernel NFS server's NFSv4/pNFS layout state-ID allocation error path. nfs4_alloc_stid() publishes a newly allocated layout state ID in the client's IDR before nfsd4_layout_setlease() completes. If lease setup fails, the vulnerable cleanup path directly frees the state-ID object without removing its IDR entry, leaving the IDR with a dangling pointer to freed slab memory. Later IDR traversals, including state display or client teardown, can dereference that pointer. The corrected path initializes the layout fence delayed-work state before lease setup and uses nfs4_put_stid() to remove the IDR entry and perform the required object and file-reference cleanup.
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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel nfsd resource-handling flaw involving failure to release a layout state ID after setlease failure.
A Linux kernel vulnerability addressed by the Oracle Linux patch; no flaw details are provided.
A vulnerability addressed by AlmaLinux ALSA-2026:63014 affecting listed AlmaLinux 8 kernel packages.
A vulnerability referenced by the AlmaLinux ALSA-2026:63013 security advisory for AlmaLinux 8 kernel-rt packages.
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.