CVE-2025-40099
Critical
Description
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.
SeverityCritical
CVSS9.4
Exploit probability—
Product
Linux
PublishedOct 30, 2025
First seenOct 30, 2025
How to fix
Update
- Linux Linuxcfacc7441f760e4a73cc71b6ff1635261d534657, 15c73964da9df994302f579ed14ee5fdbce7a332, 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058, bb0f2e66e1ac043a5b238f5bcab4f26f3c317039, 6447b0e355562a1ff748c4a2ffb89aae7e84d2c9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4ecce920e13ace16a5ba45efe8909946c28fb2ad ≤ v < cfacc7441f760e4a73cc71b6ff1635261d534657, 4ecce920e13ace16a5ba45efe8909946c28fb2ad ≤ v < 15c73964da9df994302f579ed14ee5fdbce7a332, 4ecce920e13ace16a5ba45efe8909946c28fb2ad ≤ v < 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058, 4ecce920e13ace16a5ba45efe8909946c28fb2ad ≤ v < bb0f2e66e1ac043a5b238f5bcab4f26f3c317039, 4ecce920e13ace16a5ba45efe8909946c28fb2ad ≤ v < 6447b0e355562a1ff748c4a2ffb89aae7e84d2c9, 4.11 | cfacc7441f760e4a73cc71b6ff1635261d534657, 15c73964da9df994302f579ed14ee5fdbce7a332, 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058, bb0f2e66e1ac043a5b238f5bcab4f26f3c317039, 6447b0e355562a1ff748c4a2ffb89aae7e84d2c9 |
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