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CVE-2025-38051 is an expired-pointer dereference in the Linux kernel SMB/CIFS client directory-reading path. A race between concurrent directory-read operations can release an SMB response buffer while cifs_fill_dirent retains and dereferences search-information pointers into that buffer. The vulnerable path can occur when the directory-query operation returns an error, including interruption by a pending fatal signal, and execution subsequently processes the stale pointers. The upstream fix validates the directory-query return status before using the search information.
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No public exploit code observed for this vulnerability.
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25 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Linux kernel SMB/CIFS client function cifs_fill_dirent.
A moderate-severity use-after-free (CWE-825) race condition in the Linux kernel CIFS/SMB client directory-reading path, specifically cifs_fill_dirent. A local low-privileged attacker may be able to cause a denial of service or disclose kernel information.
A Linux kernel SMB client use-after-free vulnerability in cifs_fill_dirent.
A Linux kernel SMB client use-after-free vulnerability in cifs_fill_dirent.
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.