Description
linux-pam (aka Linux PAM) before 1.6.0 allows attackers to cause a denial of service (blocked login process) via mkfifo because the openat call (for protect_dir) lacks O_DIRECTORY.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pam | 1.5.3-4 | — |
| Debian 13 | pam | 1.5.3-4 | — |
| Debian 12 | pam | 1.5.2-6+deb12u2 | — |
| Debian 11 | pam | 1.4.0-9+deb11u2 | DLA-4306-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | pam | 1.4.0-11ubuntu2.4 | USN-6588-1 |
| Ubuntu 20.04 LTS | pam | 1.3.1-5ubuntu4.7 | USN-6588-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | pam | 1.1.8-3.6ubuntu2.18.04.6+esm1 | USN-6588-2 |
| Ubuntu Pro 16.04 LTS | pam | 1.1.8-3.2ubuntu2.3+esm5 | USN-6588-2 |
| Ubuntu Pro 14.04 LTS | pam | 1.1.8-1ubuntu2.2+esm4 | USN-6588-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | pam +2 | 1.5.1-19.el9 | RHSA-2024:2438 |
| RHEL 8 | pam +1 | 1.3.1-33.el8 | RHSA-2024:3163 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | pam +2 | 1.5.1-19.el9 | ALSA-2024:2438 |
| AlmaLinux 8 | pam +1 | 1.3.1-33.el8 | ALSA-2024:3163 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | pam | 1.3.1-33.el8 | RLSA-2024:3163 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES 15 SP4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES 15 SP3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES 15 SP2 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES 15 SP1 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | pam | 1.1.8-24.56.1 | SUSE-SU-2024:0137-1 |
| SLES for SAP 15 SP4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES for SAP 15 SP3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES for SAP 15 SP2 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES for SAP 15 SP1 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLES for SAP 12 SP5 | pam | 1.1.8-24.56.1 | SUSE-SU-2024:0137-1 |
| SLE Real Time 15 SP4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE Micro 5.5 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-2, SUSE-SU-2024:0136-1 |
| SLE Micro 5.4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE Micro 5.3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE Micro 5.2 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE Micro 5.1 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE HPC 15 SP4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE HPC 15 SP3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE HPC 15 SP2 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SLE HPC 15 SP1 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SUSE Manager Server 4.3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SUSE Manager Proxy 4.3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| SUSE Enterprise Storage 7.1 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
| openSUSE Leap Micro 5.3 | pam | 1.3.0-150000.6.66.1 | SUSE-SU-2024:0136-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | linux-pam | 1.6.0-r0 | — |
| Alpine v3.23 | linux-pam | 1.6.0-r0 | — |
| Alpine v3.22 | linux-pam | 1.6.0-r0 | — |
| Alpine v3.21 | linux-pam | 1.6.0-r0 | — |
| Alpine v3.20 | linux-pam | 1.6.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | pam +2 | 1.5.1-8.amzn2023.0.4 | ALAS2023-2024-502 |
| Amazon Linux 2 | pam +1 | 1.1.8-23.amzn2.0.2 | ALAS2-2024-2435 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | pam | 1.5.3-2 | — |
| Azure Linux 2 (CBL-Mariner) | pam | 1.5.1-6 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | pam +2 | 1.5.1-19.0.1.el9 | ELSA-2024-2438 |
| Oracle Linux 8 | pam +1 | 1.3.1-33.el8 | ELSA-2024-3163 |
Advisories 26
- ALSA-2024:2438 Moderate: pam security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3163 Moderate: pam security update AlmaLinux Security Advisories · Oct 29, 2026
- SSA-794697 SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1 Siemens ProductCERT · Oct 13, 2026
- USN-6588-2 pam vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2024:2438 Red Hat Security Advisory: pam security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- ICSA-26-134-16 Siemens Ruggedcom Rox CISA ICS & IT advisories · May 14, 2026
- NCSC-2026-0147 Kwetsbaarheden verholpen in Siemens-producten NCSC-NL (Netherlands) · May 13, 2026
- SSA-577017 SSA-577017: Multiple Vulnerabilities in Ruggedcom Rox Before 2.17.1 Siemens ProductCERT · May 12, 2026
- WID-SEC-2024-1226 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- USN-6588-1 pam vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- RHSA-2024:3163 Red Hat Security Advisory: pam security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DLA-4306-1 pam - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:3163 Moderate: pam security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2024:0136-1 Security update for pam SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0136-2 Security update for pam SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0137-1 Security update for pam SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0995 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 17, 2025
- WID-SEC-2024-3377 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 12, 2025
- WID-SEC-2024-1905 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 3, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- WID-SEC-2024-3375 IBM DataPower Gateway: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 7, 2024
- ELSA-2024-3163 Moderate: pam security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 23, 2024
- ELSA-2024-2438 Moderate: pam security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 3, 2024
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- ALAS2023-2024-502 Low: pam security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 6, 2024
- ALAS2-2024-2435 Low: pam security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 1, 2024