CVE-2026-54369
Fixed in a distro release EPSS <1%CVSS 7.1
acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.
Products: acl project acl, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4.22, Red Hat Discovery 2, Red Hat Hardened Images, Red Hat Insights proxy 1.5, Red Hat OpenShift distributed tracing 3.10.2, Red Hat Update Infrastructure 5, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | acl | 2.4.0-1.el10_2 |
| AlmaLinux 10 | libacl | 2.4.0-1.el10_2 |
| AlmaLinux 10 | libacl-devel | 2.4.0-1.el10_2 |
| AlmaLinux 8 | acl | 2.4.0-1.el8_10 |
| AlmaLinux 8 | libacl | 2.4.0-1.el8_10 |
| AlmaLinux 8 | libacl-devel | 2.4.0-1.el8_10 |
| AlmaLinux 9 | acl | 2.4.0-1.el9_8 |
| AlmaLinux 9 | libacl | 2.4.0-1.el9_8 |
| AlmaLinux 9 | libacl-devel | 2.4.0-1.el9_8 |
| Debian 12 | acl | no fix |
| Debian 13 | acl | no fix |
| Debian 14 | acl | 2.4.0-1 |
| Red Hat Enterprise Linux 10.2 | acl | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | acl-debuginfo | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | acl-debugsource | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | libacl | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | libacl-debuginfo | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | libacl-devel | 0:2.4.0-1.el10_2 |
| Red Hat Enterprise Linux 8 | acl | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | acl-debuginfo | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | acl-debugsource | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | libacl | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | libacl-debuginfo | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | libacl-devel | 0:2.4.0-1.el8_10 |
| Red Hat Enterprise Linux 9 | acl | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | acl-debuginfo | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | acl-debugsource | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | libacl | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | libacl-debuginfo | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | libacl-devel | 0:2.4.0-1.el9_8 |
| Red Hat Enterprise Linux eus 10.0 | acl | 0:2.4.0-0.el10_0.1 |
| Red Hat Enterprise Linux eus 10.0 | libacl | 0:2.4.0-0.el10_0.1 |
| Red Hat Enterprise Linux eus 10.0 | libacl-debuginfo | 0:2.4.0-0.el10_0.1 |
| Red Hat hummingbird 1 | acl | 0:2.4.0-0.1.hum1 |
| Red Hat hummingbird 1 | libacl | 0:2.4.0-0.1.hum1 |
| Red Hat hummingbird 1 | libacl-devel | 0:2.4.0-0.1.hum1 |
| Red Hat rhel aus 8.4 | acl | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.4 | acl-debuginfo | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.4 | acl-debugsource | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.4 | libacl | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.4 | libacl-debuginfo | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.4 | libacl-devel | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel aus 8.6 | acl | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel aus 8.6 | acl-debuginfo | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel aus 8.6 | acl-debugsource | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel aus 8.6 | libacl | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel aus 8.6 | libacl-debuginfo | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel aus 8.6 | libacl-devel | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel e4s 8.8 | acl | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 8.8 | acl-debuginfo | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 8.8 | acl-debugsource | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 8.8 | libacl | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 8.8 | libacl-debuginfo | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 8.8 | libacl-devel | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel e4s 9.2 | acl | 0:2.4.0-0.el9_2.1 |
| Red Hat rhel e4s 9.2 | acl-debuginfo | 0:2.4.0-0.el9_2.1 |
| Red Hat rhel e4s 9.2 | acl-debugsource | 0:2.4.0-0.el9_2.1 |
| Red Hat rhel e4s 9.4 | acl | 0:2.4.0-0.el9_4.1 |
| Red Hat rhel e4s 9.4 | acl-debuginfo | 0:2.4.0-0.el9_4.1 |
| Red Hat rhel e4s 9.4 | acl-debugsource | 0:2.4.0-0.el9_4.1 |
| Red Hat rhel eus 9.6 | acl | 0:2.4.0-0.el9_6.1 |
| Red Hat rhel eus 9.6 | acl-debuginfo | 0:2.4.0-0.el9_6.1 |
| Red Hat rhel eus 9.6 | acl-debugsource | 0:2.4.0-0.el9_6.1 |
| Red Hat rhel eus long life 8.4 | acl | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.4 | acl-debuginfo | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.4 | acl-debugsource | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.4 | libacl | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.4 | libacl-debuginfo | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.4 | libacl-devel | 0:2.4.0-0.el8_4.1 |
| Red Hat rhel eus long life 8.6 | acl | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel eus long life 8.6 | acl-debuginfo | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel eus long life 8.6 | acl-debugsource | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel eus long life 8.6 | libacl | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel eus long life 8.6 | libacl-debuginfo | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel eus long life 8.6 | libacl-devel | 0:2.4.0-0.el8_6.1 |
| Red Hat rhel tus 8.8 | acl | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel tus 8.8 | acl-debuginfo | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel tus 8.8 | acl-debugsource | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel tus 8.8 | libacl | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel tus 8.8 | libacl-debuginfo | 0:2.4.0-0.el8_8.1 |
| Red Hat rhel tus 8.8 | libacl-devel | 0:2.4.0-0.el8_8.1 |
| Rocky Linux 10 | acl | 0:2.4.0-1.el10_2 |
| Rocky Linux 8 | acl | 0:2.4.0-1.el8_10 |
| Rocky Linux 9 | acl | 0:2.4.0-1.el9_8 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Micro 5.3 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Micro 5.3 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Micro 5.4 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Micro 5.4 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Micro 5.5 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Micro 5.5 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server 16.0 | acl | 2.4.0-160000.1.1 |
| SUSE Linux Enterprise Server 16.0 | attr | 2.6.0-160000.1.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | acl | 2.4.0-150000.4.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | attr | 2.6.0-150000.4.3.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | acl | 2.4.0-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | attr | 2.6.0-160000.1.1 |
| SUSE Linux Micro 6.2 | acl | 2.4.0-160000.1.1 |
| SUSE Linux Micro 6.2 | attr | 2.6.0-160000.1.1 |
| Ubuntu 14.04 LTS | acl | no fix |
| Ubuntu 16.04 LTS | acl | no fix |
| Ubuntu 18.04 LTS | acl | no fix |
| Ubuntu 20.04 LTS | acl | no fix |
| Ubuntu 22.04 LTS | acl | no fix |
| Ubuntu 24.04 LTS | acl | no fix |
| Ubuntu 25.10 | acl | no fix |
| Ubuntu 26.04 LTS | acl | no fix |
| openSUSE Leap 16.0 | acl | 2.4.0-160000.1.1 |
| openSUSE Leap 16.0 | attr | 2.6.0-160000.1.1 |
| openSUSE Tumbleweed | acl | 2.4.0-1.1 |