by Kastro
Paper/Archive/CVE-2025-40099

CVE-2025-40099

Linux Linux — cifs: parse_dfs_referrals: prevent oob on malformed input

EPSS 0.4%CVSS 9.4
critical.is priorityof 100
35
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 35.2.352 × 207.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < cfacc7441f760e4a73cc71b6ff1635261d534657cfacc7441f760e4a73cc71b6ff1635261d534657CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 15c73964da9df994302f579ed14ee5fdbce7a33215c73964da9df994302f579ed14ee5fdbce7a332CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b0588bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < bb0f2e66e1ac043a5b238f5bcab4f26f3c317039bb0f2e66e1ac043a5b238f5bcab4f26f3c317039CNA
Linux4ecce920e13ace16a5ba45efe8909946c28fb2ad – < 6447b0e355562a1ff748c4a2ffb89aae7e84d2c96447b0e355562a1ff748c4a2ffb89aae7e84d2c9CNA
Linux4.11–CNA

Scores by source

Linux (CNA)9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgit.kernel.org/stable/c/cfacc7441f760e4a73cc71b6ff1635261d534657refgit.kernel.org/stable/c/15c73964da9df994302f579ed14ee5fdbce7a332refgit.kernel.org/stable/c/8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058refgit.kernel.org/stable/c/bb0f2e66e1ac043a5b238f5bcab4f26f3c317039refgit.kernel.org/stable/c/6447b0e355562a1ff748c4a2ffb89aae7e84d2c9