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CVE-2025-38206 is a double-free vulnerability in the Linux kernel exFAT filesystem's delayed_free path. If exfat_create_upcase_table() fails, its error handling frees the volume upcase-table allocation. During subsequent superblock teardown, exfat_kill_sb() can invoke delayed_free(), which calls exfat_free_upcase_table() and frees the same allocation again. The upstream fix clears the upcase-table pointer after freeing it, preventing the later free.
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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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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A Linux kernel double-free vulnerability in the exFAT filesystem that can lead to denial of service.
A Linux kernel double-free vulnerability in the exFAT filesystem that can lead to denial of service.
A Linux kernel exFAT filesystem double-free vulnerability that can cause denial of service, addressed by a Red Hat kernel-rt security update.
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.