Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2026-54411

Observable Timing Discrepancy

Published: Jun 14, 2026 | Modified: Aug 10, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
4.8 MODERATE
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-54411
CWEhttps://cwe.mitre.org/data/definitions/208.html

Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb modules plaintext-password comparison path in modules/pam_userdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences.

Weakness

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 10RedHatpam-0:1.6.1-9.el10_2.1*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatpam-0:1.6.1-8.el10_0.1*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatpam-0:1.1.8-23.el7_9.3*
Red Hat Enterprise Linux 8RedHatpam-0:1.3.1-40.el8_10*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatpam-0:1.3.1-14.el8_4.3*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatpam-0:1.3.1-14.el8_4.3*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatpam-0:1.3.1-16.el8_6.4*
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRedHatpam-0:1.3.1-16.el8_6.4*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatpam-0:1.3.1-26.el8_8.3*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatpam-0:1.3.1-26.el8_8.3*
Red Hat Enterprise Linux 9RedHatpam-0:1.5.1-27.el9_8.1*
Red Hat Enterprise Linux 9RedHatpam-0:1.5.1-28.el9_8.1*
Red Hat Enterprise Linux 9RedHatpam-0:1.5.1-27.el9_8.1*
Red Hat Enterprise Linux 9RedHatpam-0:1.5.1-28.el9_8.1*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatpam-0:1.5.1-15.el9_2.3*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHatpam-0:1.5.1-24.el9_4.2*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatpam-0:1.5.1-26.el9_6.1*
Red Hat AI Inference Server 3.2RedHatrhaiis/model-opt-cuda-rhel9:1790621714*
Red Hat AI Inference Server 3.2RedHatrhaiis/vllm-cuda-rhel9:1790621718*
Red Hat AI Inference Server 3.2RedHatrhaiis/vllm-rocm-rhel9:1790621713*
Red Hat AI Inference Server 3.5RedHatrhaii/vllm-rocm-rhel9:1791425869*
Red Hat AI Inference Server 3.5RedHatrhaii/vllm-gaudi-rhel9:1791427182*
Red Hat AI Inference Server 3.5RedHatrhaii/model-opt-cuda-rhel9:1791803821*
Red Hat AI Inference Server 3.5RedHatrhaii/vllm-cuda-rhel9:1791473631*
Red Hat AI Inference Server 3.5RedHatrhaii/vllm-spyre-rhel9:1791818357*
Red Hat AI Inference Server 3.5RedHatrhaii/vllm-cpu-rhel9:1791473614*
Red Hat Hardened ImagesRedHatpam-main-1.7.2-2.2.hum1*
Red Hat Hardened ImagesRedHatpam-main-1.7.2-1.1.hum1*
Red Hat OpenShift AI 3.0RedHatrhai/base-image-rocm-rhel9:1790276886*
Red Hat OpenShift AI 3.0RedHatrhai/base-image-tpu-rhel9:1790276884*
Red Hat OpenShift AI 3.0RedHatrhai/base-image-cpu-rhel9:1790277045*
Red Hat OpenShift AI 3.0RedHatrhai/base-image-spyre-rhel9:1790276889*
Red Hat OpenShift AI 3.0RedHatrhai/base-image-cuda-rhel9:1790276974*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-tpu-rhel9:1790703497*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-rocm-rhel9:1790703506*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-cpu-rhel9:1790703590*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-spyre-rhel9:1790703568*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-cuda-rhel9:1790703586*
Red Hat OpenShift AI 3.2RedHatrhai/base-image-rocm-rhel9:1790703494*
Red Hat OpenShift AI 3.4RedHatrhai/base-image-neuron-rhel9:1790703542*
PamUbuntujammy*
PamUbuntunoble*
PamUbuntuquesting*
PamUbunturesolute*

References

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