CVE-2025-40285

HighCVSS 7.5/10Last modified Oct 15, 2026

Description

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

smb/server: fix possible refcount leak in smb2_sess_setup()

Reference count of ksmbd_session will leak when session need reconnect. Fix this by adding the missing ksmbd_user_session_put().

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 37a0e2b362b3150317fb6e2139de67b1e29ae5ff, < 6fc935f798d44a8eb8a5e6659198399fbf57b981; >= 450a844c045ff0895d41b05a1cbe8febd1acfcfd, < e671f9bb97805771380c98de944e2ceab6949188; >= a39e31e22a535d47b14656a7d6a893c7f6cf758c, < dcc51dfe6ff26b52cac106865a172ac982d78401; >= b95629435b84b9ecc0c765995204a4d8a913ed52, < d37b2c81c83d6c0d5ca582f4fe73c672983f9e0d; >= b95629435b84b9ecc0c765995204a4d8a913ed52, < 379510a815cb2e64eb0a379cb62295d6ade65df0; 2107ab40629aeabbec369cf34b8cf0f288c3eb1b; >= 6.1.121, < 6.1.159; >= 6.6.67, < 6.6.117; >= 6.12.6, < 6.12.59; >= 5.15.176, < 5.16
LinuxLinux6.13

References

Timeline

Published
Dec 6, 2025
Last modified
Oct 15, 2026
NVD status
Deferred

Related CVEs from 2025

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CVE-2025-40285: High severity, CVSS 7.5 | Vulnix