Description
close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE.
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 | less | 590-2.1 | — |
| Debian 13 | less | 590-2.1 | — |
| Debian 12 | less | 590-2.1~deb12u2 | DSA-5679-1 |
| Debian 11 | less | 551-2+deb11u2 | DSA-5679-1 |
| Debian 10 | less | 487-0.1+deb10u1 | DLA-3823-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | less | 590-2ubuntu1 | — |
| Ubuntu 22.04 LTS | less | 590-1ubuntu0.22.04.2 | USN-6664-1 |
| Ubuntu 20.04 LTS | less | 551-1ubuntu0.2 | USN-6664-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | less | 487-0.1ubuntu0.1~esm1 | USN-6664-1 |
| Ubuntu Pro 16.04 LTS | less | 481-2.1ubuntu0.2+esm1 | USN-6664-1 |
| Ubuntu Pro 14.04 LTS | less | 458-2ubuntu0.1~esm2 | USN-8079-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | less | 590-3.el9_3 | RHSA-2024:1692 |
| RHEL 8 | less | 530-2.el8_9 | RHSA-2024:4256, RHSA-2024:1610 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.8 EUS | less | 530-2.el8_8 | RHSA-2024:1875 |
| RHEL 8.6 EUS | less | 530-2.el8_6 | RHSA-2024:1989 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | less | 590-3.el9_3 | ALSA-2024:1692 |
| AlmaLinux 8 | less | 530-2.el8_9 | ALSA-2024:4256, ALSA-2024:1610 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | less | 590-3.el9_3 | RLSA-2024:1692 |
| Rocky Linux 8 | less | 530-2.el8_9 | RLSA-2024:4256, RLSA-2024:1610 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLES 15 SP4 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLES 15 SP3 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLES 15 SP2 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLES 12 SP5 | less | 458-7.12.1 | SUSE-SU-2024:1189-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLES for SAP 15 SP3 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLES for SAP 15 SP2 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLES for SAP 12 SP5 | less | 458-7.12.1 | SUSE-SU-2024:1189-1 |
| SLE Micro 5.5 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLE Micro 5.4 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLE Micro 5.3 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLE Micro 5.2 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLE Micro 5.1 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLE HPC 15 SP4 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SLE HPC 15 SP3 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SLE HPC 15 SP2 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
| SUSE Manager Server 4.3 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SUSE Manager Proxy 4.3 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| SUSE Enterprise Storage 7.1 | less | 530-150000.3.6.2 | SUSE-SU-2024:1190-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
| openSUSE Leap Micro 5.3 | less | 590-150400.3.6.2 | SUSE-SU-2024:1192-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | less | 608-2.amzn2023.0.1 | ALAS2023-2023-123 |
| Amazon Linux 2 | less | 458-9.amzn2.0.3 | ALAS2-2024-2485 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | less | 590-3 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | less | 590-3.el9_3 | ELSA-2024-1692 |
| Oracle Linux 8 | less | 530-2.el8_9 | ELSA-2024-4256, ELSA-2024-1610 |
Advisories 30
- ALSA-2024:1692 Moderate: less security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:1610 Moderate: less security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:4256 Important: less security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6664-1 less vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- WID-SEC-2024-1226 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- RHSA-2024:1989 Red Hat Security Advisory: less security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:1692 Red Hat Security Advisory: less security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:1875 Red Hat Security Advisory: less security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:1610 Red Hat Security Advisory: less security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4256 Red Hat Security Advisory: less security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- USN-8079-1 less vulnerability Ubuntu Security Notices (USN) · Mar 9, 2026
- DSA-5679-1 less - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3823-1 less - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-0434 less: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Mar 5, 2026
- RLSA-2024:1610 Moderate: less security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:1692 Moderate: less security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2024:1189-1 Security update for less SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1190-1 Security update for less SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1192-1 Security update for less SUSE / openSUSE Security Updates · Feb 4, 2026
- NCSC-2025-0382 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Dec 9, 2025
- SSA-202008 SSA-202008: Multiple Vulnerabilities in Ruggedcom Rox Before V2.17.0 Siemens ProductCERT · Dec 9, 2025
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- WID-SEC-2024-3377 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 12, 2025
- RLSA-2024:4256 Important: less security update Rocky Linux Security Advisories · May 7, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- ELSA-2024-4256 Important: less security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 2, 2024
- ELSA-2024-1692 Moderate: less security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 8, 2024
- ELSA-2024-1610 Moderate: less security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 3, 2024
- ALAS2-2024-2485 Important: less security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 4, 2024
- ALAS2023-2023-123 Important: less security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 29, 2024
References
- https://github.com/gwsw/less/commit/c6ac6de49698be84d264a0c4c0c40bb870b10144
- https://greenwoodsoftware.com/less/
- https://github.com/gwsw/less/compare/v605...v606
- https://security.netapp.com/advisory/ntap-20240605-0010/
- [debian-lts-announce] 20240527 [SECURITY] [DLA 3823-1] less security update mailing-list