In the Linux kernel, the following vulnerability has been resolved: cifs: parsedfsreferrals: prevent oob on malformed input Malicious SMB server can send invalid reply to FSCTLDFSGETREFERRALS - reply smaller than sizeof(struct getdfsreferralrsp) - reply with number of referrals smaller than NumberOfReferrals in the header Processing of such replies will cause oob. Return -EINVAL error on such replies to prevent oob-s.