CVE-2025-68226 | BDVDB-2026-306359 Detail

LinuxLinux

Description#

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix incomplete backport in cfids_invalidation_worker() The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in smb2_close_cached_fid()") was an incomplete backport and missed one kref_put() call in cfids_invalidation_worker() that should have been converted to close_cached_dir().

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

No weakness recorded in the source data.

References#

https://git.kernel.org/stable/c/abd29b6e17a918fdd68352ce4813e167acc8727e

Exploit#

No public exploit known

History#

Version 12025-12-16Record published in the CVE List.
Version 22026-10-15Most recent update recorded in the CVE List.

Published

Published: 2025-12-16
Last modified: 2026-10-15

Vendor information

Vendor: Linux
Product: Linux

All Linux vulnerabilities

Score

8.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= bdb596ceb4b7c3f28786a33840263728217fbcf5 and < abd29b6e17a918fdd68352ce4813e167acc8727e
Fixed
abd29b6e17a918fdd68352ce4813e167acc8727e
Vulnerable
>= 6.17.8 and < 6.17.10
Fixed
6.17.10

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).