CVE-2026-23303

smb: client: Don't log plaintext credentials in cifs_set_cifscreds

MEDIUM

5.5

CVSS Score

Published: March 25, 2026 at 10:26 AM UTC

Updated: October 15, 2026 at 02:18 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Don't log plaintext credentials in cifs_set_cifscreds When debug logging is enabled, cifs_set_cifscreds() logs the key payload and exposes the plaintext username and password. Remove the debug log to avoid exposing credentials.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.3.1 ≤ v < 5.10.2535.11 ≤ v < 5.15.2035.16 ≤ v < 6.1.1676.13 ≤ v < 6.18.176.19 ≤ v < 6.19.76.2 ≤ v < 6.6.1306.7 ≤ v < 6.12.773.3 3.3 rc2 3.3 rc3 3.3 rc4 3.3 rc5 3.3 rc6 3.3 rc7 7.0 7.0 rc18a8798a5ff90977d6459ce1d657cf8fe13a51e97

Vendor states this is fixed in 2ef0fc3bf49db2b9df36d5f44508c9e384bfa2a1 (fixed)

Vendor states this is fixed in 2f37dc436d4e61ff7ae0b0353cf91b8c10396e4d (fixed)

Vendor states this is fixed in 3990f352bb0adc8688d0949a9c13e3110570eb61 (fixed)

Vendor states this is fixed in 3e182701db612ddd794ccd5ed822e6cc1db2b972 (fixed)

Vendor states this is fixed in 54c570de9a35860dfa85fe668f23ddfda8cc7e26 (fixed)

Vendor states this is fixed in b746a357abfb8fdb0a171d51ec5091e786d34be1 (fixed)

Vendor states this is fixed in e5a3b11e07b335006371915b2da47b6056c9e3bc (fixed)

Vendor states this is fixed in ff0ece8ed04180c52167c003362284b23cf54e8d (fixed)

Vendor states this is fixed in 3.3 (unaffected)

Vendor states this is fixed in 5.10.253 (unaffected)

Vendor states this is fixed in 5.15.203 (unaffected)

Vendor states this is fixed in 6.1.167 (unaffected)