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SUSE PAM Moderate UserDB Timing Issue Advisory 2026-3163-1 CVE-2026-54411

suse
Calendar Grey July 21, 2026
Scroller Suse
Update available for pam addressing a timing issue in the userdb module to enhance security in SUSE Linux.
SUSE released a security update for pam addressing CVE-2026-54411, which involves a vulnerability in the plaintext-password comparison of the pam_userdb module, affecting various S...

Summary

## This update for pam fixes the following issue * CVE-2026-54411: timing discrepancy in the pam_userdb module's plaintext- password comparison (bsc#1268290). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-3163=1 * SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-3163=1 * SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-3163=1 * Development Tools Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-3163=1 * Basesystem Module 15-SP7

Topics%20covered

Topics Covered

security advisory moderate SuSE PAM timing issue userdb

References

* bsc#1268290

Cross-

* CVE-2026-54411

CVSS scores:

* CVE-2026-54411 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

* CVE-2026-54411 ( NVD ): 6.9

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:X/V:D/RE:X/U:X

* CVE-2026-54411 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products:

* Basesystem Module 15-SP7

* Development Tools Module 15-SP7

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Micro 5.3

* SUSE Linux Enterprise Micro 5.4

* SUSE Linux Enterprise Micro 5.5

* SUSE Linux Enterprise Micro for Rancher 5.3

* SUSE Linux Enterprise Micro for Rancher 5.4

* SUSE Linux Enterprise Real Time 15 SP7

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3163-1
Release Date: 2026-07-21T14:51:10Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE PAM timing issue userdb

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