CVE-2026-54411
libpam0g: Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's plaintext-pass...
CVE-2026-54411 is fixed in 14 products on 1 platform, first by libpam-cracklib 1.4.0-11ubuntu2.7, released June 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
4.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0032
25th percentile
Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's 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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libpam-cracklib · Ubuntu 22.04.1 LTS (jammy) | 1.4.0-11ubuntu2.7 | libpam-cracklib 1.4.0-11ubuntu2.7 | Jun 14, 2026 |
| libpam-modules · Ubuntu 22.04.1 LTS (jammy) | 1.4.0-11ubuntu2.7 | libpam-modules 1.4.0-11ubuntu2.7 | Jun 14, 2026 |
| libpam-modules · Ubuntu 24.04.5 LTS (noble) | 1.5.3-5ubuntu5.6 | libpam-modules 1.5.3-5ubuntu5.6 | Jun 14, 2026 |
| libpam-modules · Ubuntu 26.04.1 LTS (resolute) | 1.7.0-5ubuntu3.1 | libpam-modules 1.7.0-5ubuntu3.1 | Jun 14, 2026 |
| libpam-modules-bin · Ubuntu 22.04.1 LTS (jammy) | 1.4.0-11ubuntu2.7 | libpam-modules-bin 1.4.0-11ubuntu2.7 | Jun 14, 2026 |
| libpam-modules-bin · Ubuntu 24.04.5 LTS (noble) | 1.5.3-5ubuntu5.6 | libpam-modules-bin 1.5.3-5ubuntu5.6 | Jun 14, 2026 |
| libpam-modules-bin · Ubuntu 26.04.1 LTS (resolute) | 1.7.0-5ubuntu3.1 | libpam-modules-bin 1.7.0-5ubuntu3.1 | Jun 14, 2026 |
| libpam-runtime · Ubuntu 22.04.1 LTS (jammy) | 1.4.0-11ubuntu2.7 | libpam-runtime 1.4.0-11ubuntu2.7 | Jun 14, 2026 |
| libpam-runtime · Ubuntu 24.04.5 LTS (noble) | 1.5.3-5ubuntu5.6 | libpam-runtime 1.5.3-5ubuntu5.6 | Jun 14, 2026 |
| libpam-runtime · Ubuntu 26.04.1 LTS (resolute) | 1.7.0-5ubuntu3.1 | libpam-runtime 1.7.0-5ubuntu3.1 | Jun 14, 2026 |
| libpam0g · Ubuntu 22.04.1 LTS (jammy) | 1.4.0-11ubuntu2.7 | libpam0g 1.4.0-11ubuntu2.7 | Jun 14, 2026 |
| libpam0g · Ubuntu 24.04.5 LTS (noble) | 1.5.3-5ubuntu5.6 | libpam0g 1.5.3-5ubuntu5.6 | Jun 14, 2026 |
| libpam0g · Ubuntu 26.04.1 LTS (resolute) | 1.7.0-5ubuntu3.1 | libpam0g 1.7.0-5ubuntu3.1 | Jun 14, 2026 |
| pam · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam · RHEL 10 | 1.6.1-8.el10_0.1 | RHSA-2026:61229 | Jun 14, 2026 |
| pam · RHEL 8 | 0:1.3.1-40.el8_10 | RHSA-2026:56131 | Aug 19, 2026 |
| pam · RHEL 9 | 0:1.5.1-28.el9_8.1 | RHSA-2026:64815 | Aug 28, 2026 |
| pam · almalinux 10 | 1.6.1-9.el10_2.1 | ALSA-2026:59379 | Aug 25, 2026 |
| pam · almalinux 8 | 1.3.1-40.el8_10 | ALSA-2026:56131 | Aug 18, 2026 |
| pam · almalinux 9 | 1.5.1-28.el9_8.1 | ALSA-2026:64815 | Sep 8, 2026 |
| pam · ol 10 | 0:1.6.1-9.el10_2.1 | ELSA-2026-59379 | Aug 25, 2026 |
| pam · ol 8 | 0:1.3.1-40.0.1.el8_10 | ELSA-2026-56131 | Aug 18, 2026 |
| pam · ol 9 | 0:1.5.1-28.0.1.el9_8.1 | ELSA-2026-60224-0 | Aug 28, 2026 |
| pam · opensuse-leap 16.0 | 1.7.1-160000.5.1 | OPENSUSE-SU-2026:21320-1 | Jul 13, 2026 |
| pam · rocky 10 | 0:1.6.1-9.el10_2.1 | RLSA-2026:59379 | Aug 26, 2026 |
| pam · rocky 8 | 0:1.3.1-40.el8_10 | RLSA-2026:56131 | Aug 19, 2026 |
| pam · rocky 9 | 0:1.5.1-28.el9_8.1 | RLSA-2026:64815 | Sep 9, 2026 |
| pam · sles 15.7 | 1.3.0-150000.6.89.1 | SUSE-SU-2026:3163-1 | Jul 21, 2026 |
| pam · sles 16.0 | 1.7.1-160000.5.1 | SUSE-SU-2026:22639-1 | Jul 13, 2026 |
| pam-debuginfo · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam-debugsource · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam-devel · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam-devel · RHEL 8 | 0:1.3.1-40.el8_10 | RHSA-2026:56131 | Aug 19, 2026 |
| pam-devel · RHEL 9 | 0:1.5.1-28.el9_8.1 | RHSA-2026:64815 | Aug 28, 2026 |
| pam-devel · almalinux 10 | 1.6.1-9.el10_2.1 | ALSA-2026:59379 | Aug 25, 2026 |
| pam-devel · almalinux 8 | 1.3.1-40.el8_10 | ALSA-2026:56131 | Aug 18, 2026 |
| pam-devel · almalinux 9 | 1.5.1-28.el9_8.1 | ALSA-2026:64815 | Sep 8, 2026 |
| pam-devel · ol 10 | 0:1.6.1-9.el10_2.1 | ELSA-2026-59379 | Aug 25, 2026 |
| pam-devel · ol 8 | 0:1.3.1-40.0.1.el8_10 | ELSA-2026-56131 | Aug 18, 2026 |
| pam-devel · ol 9 | 0:1.5.1-28.0.1.el9_8.1 | ELSA-2026-60224-0 | Aug 28, 2026 |
| pam-doc · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam-docs · RHEL 9 | 0:1.5.1-28.el9_8.1 | RHSA-2026:64815 | Aug 28, 2026 |
| pam-docs · almalinux 9 | 1.5.1-28.el9_8.1 | ALSA-2026:64815 | Sep 8, 2026 |
| pam-docs · ol 9 | 0:1.5.1-28.0.1.el9_8.1 | ELSA-2026-60224-0 | Aug 28, 2026 |
| pam-full-src · opensuse-leap 16.0 | 1.7.1-160000.5.1 | OPENSUSE-SU-2026:21320-1 | Jul 13, 2026 |
| pam-full-src · sles 16.0 | 1.7.1-160000.5.1 | SUSE-SU-2026:22639-1 | Jul 13, 2026 |
| pam-libs · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
| pam-libs · almalinux 10 | 1.6.1-9.el10_2.1 | ALSA-2026:59379 | Aug 25, 2026 |
| pam-libs · ol 10 | 0:1.6.1-9.el10_2.1 | ELSA-2026-59379 | Aug 25, 2026 |
| pam-libs-debuginfo · Fedora 43 | 1.7.1-5.fc43 | FEDORA-2026-ADC8DDBEAA | Jul 10, 2026 |
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