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CVE-2026-89638 smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions

🗓️ 11 Sep 2026 19:45:31Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 5 Views

CIFS client retains setuid/setgid on write with cifsacl/modefromsid, enabling privilege escalation.

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