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CVE-2025-38527 is a use-after-free vulnerability in the Linux kernel SMB/CIFS client function cifs_oplock_break(). During filesystem unmounting, _cifsFileInfo_put() can release the final superblock reference through cifs_sb_deactive(), initiating superblock teardown and inode reclamation through RCU. The oplock-break operation subsequently continues accessing the freed cinode structure, including its open_file_lock and the call to cifs_done_oplock_break(). This race can cause kernel memory corruption. The fix retains an additional superblock reference throughout the oplock-break operation so that the superblock and associated inodes remain valid until processing completes.
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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 vulnerability affecting Google COS kernel packages sys-kernel/csql-kernel-6_1 and sys-kernel/csql-kernel-6_6. The listed CVSS v3 score is 7.0, indicating local exploitation requiring low privileges and high attack complexity, with high confidentiality, integrity, and availability impacts. The content does not describe the underlying flaw. The recommended remediation is to update sys-kernel/csql-kernel-6_1 and related packages to version 18613.339.65 or later.
A vulnerability affecting Google COS kernel packages, identified by Tenable Cloud Security plugin 467692. The CVSS v3 score is 7.0, indicating local attack access, high attack complexity, low privileges required, and potentially high confidentiality, integrity, and availability impacts. The content does not describe the underlying flaw. The recommended fix is to update sys-kernel/csql-kernel-6_12 and related packages to version 19216.0.12 or later.
A high-severity local vulnerability affecting Google COS kernel packages, including sys-kernel/csql-kernel-6_1 and sys-kernel/lakitu-kernel-6_1, remediated by updating to version 18244.448.43 or later.
Referenced by the TuxCare CentOS 8.5 security advisory; no vulnerability details are provided.
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.