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CVE-2025-37738 is a use-after-free vulnerability in the Linux kernel ext4 filesystem extended-attribute cleanup path. During inode deletion or eviction, ext4_xattr_inode_dec_ref_all() could continue processing extended-attribute entries beyond the valid end entry. This resulted in an invalid read of freed slab memory, as detected by KASAN, through the ext4_xattr_delete_inode() and ext4_evict_inode() call path. The fix makes ext4 ignore extended-attribute entries past the end boundary.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel ext4 vulnerability related to handling extended attributes past the end.
A Linux kernel ext4 filesystem vulnerability involving extended attributes located past the end of valid data.
A Linux kernel ext4 filesystem flaw involving extended attributes located past the end of valid data.
A Linux kernel ext4 filesystem flaw concerning extended attributes located past the end of expected data.
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.