CVE-2025-40099

Summary

In the Linux kernel, the following vulnerability has been resolved:

cifs: parse_dfs_referrals: prevent oob on malformed input

Malicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS

  • reply smaller than sizeof(struct get_dfs_referral_rsp)
  • 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4ecce920e13ace16a5ba45efe8909946c28fb2ad < cfacc7441f760e4a73cc71b6ff1635261d534657affected
LinuxLinux4ecce920e13ace16a5ba45efe8909946c28fb2ad < 15c73964da9df994302f579ed14ee5fdbce7a332affected
LinuxLinux4ecce920e13ace16a5ba45efe8909946c28fb2ad < 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058affected
LinuxLinux4ecce920e13ace16a5ba45efe8909946c28fb2ad < bb0f2e66e1ac043a5b238f5bcab4f26f3c317039affected
LinuxLinux4ecce920e13ace16a5ba45efe8909946c28fb2ad < 6447b0e355562a1ff748c4a2ffb89aae7e84d2c9affected
LinuxLinux4.11affected
LinuxLinux0 < 4.11unaffected
LinuxLinux6.1.158 <= 6.1.*unaffected
LinuxLinux6.6.114 <= 6.6.*unaffected
LinuxLinux6.12.55 <= 6.12.*unaffected
LinuxLinux6.17.5 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References