CVE-2025-40099

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.

Score

CVSS 3.1 9.4 Critical

Status

Deferred - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-10-30

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/cfacc7441f760e4a73cc71b6ff1635261d534657
• https://git.kernel.org/stable/c/15c73964da9df994302f579ed14ee5fdbce7a332
• https://git.kernel.org/stable/c/8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058
• https://git.kernel.org/stable/c/bb0f2e66e1ac043a5b238f5bcab4f26f3c317039
• https://git.kernel.org/stable/c/6447b0e355562a1ff748c4a2ffb89aae7e84d2c9