Description
A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.
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 | libonig | 6.9.2-1 | — |
| Debian 13 | libonig | 6.9.2-1 | — |
| Debian 12 | libonig | 6.9.2-1 | — |
| Debian 10 | php7.3 | 7.3.9-1~deb10u1 | DSA-4527-1 |
| Debian 9 | libonig | 6.1.3-2+deb9u1 | DLA-2431-1 |
| Debian 9 | php7.0 | 7.0.33-0+deb9u5 | DSA-4529-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | libonig | 5.9.5-3.2+deb8u2 | DLA-1854-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | groonga | No fix yet | — |
| Ubuntu 26.04 LTS | groonga | No fix yet | — |
| Ubuntu 25.10 | groonga | No fix yet | — |
| Ubuntu 24.04 LTS | groonga | No fix yet | — |
| Ubuntu 22.04 LTS | groonga | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libonig | 6.9.2-1 | — |
| Ubuntu 20.04 LTS | mudlet +1 | No fix yet | — |
| Ubuntu 18.04 LTS | mudlet +1 | No fix yet | — |
| Ubuntu 16.04 LTS | mudlet +2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | libonig | 6.7.0-1ubuntu0.1~esm1 | — |
| Ubuntu Pro 16.04 LTS | libonig | 5.9.6-1ubuntu0.1+esm1 | — |
| Ubuntu Pro 14.04 LTS | libonig | 5.9.1-1ubuntu1.1+esm1 | — |
| Ubuntu Pro 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.29+esm4 | USN-4088-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | apcu-panel +2 | 5.1.17-1.module+el8.1.0+3189+a1bff096 | RHSA-2020:3662 |
| RHEL 8 | libzip +2 | 1.5.2-1.module+el8.1.0+3189+a1bff096 | RHSA-2020:3662 |
| RHEL 8 | oniguruma +1 | 6.8.2-2.1.el8_9 | RHSA-2024:0889 |
| RHEL 8 | php +25 | 7.3.20-1.module+el8.2.0+7373+b272fdef | RHSA-2020:3662 |
| RHEL 8 | php-pear | 1:1.10.9-1.module+el8.1.0+3189+a1bff096 | RHSA-2020:3662 |
| RHEL 8 | php-pecl-rrd | 2.0.1-1.module+el8.2.0+4968+1d5097db | RHSA-2020:3662 |
| RHEL 8 | php-pecl-xdebug | 2.8.0-1.module+el8.2.0+4968+1d5097db | RHSA-2020:3662 |
| RHEL 8 | php-pecl-zip | 1.15.4-1.module+el8.1.0+3189+a1bff096 | RHSA-2020:3662 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.8 EUS | oniguruma +1 | 6.8.2-2.1.el8_8 | RHSA-2024:0572 |
| RHEL 8.6 EUS | oniguruma +1 | 6.8.2-2.1.el8_6 | RHSA-2024:0409 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | apcu-panel +2 | 5.1.17-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | libzip +2 | 1.5.2-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | oniguruma +1 | 6.8.2-2.1.el8_9 | ALSA-2024:0889 |
| AlmaLinux 8 | php +25 | 7.3.20-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | php-pear | 1:1.10.9-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | php-pecl-rrd | 2.0.1-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | php-pecl-xdebug | 2.8.0-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
| AlmaLinux 8 | php-pecl-zip | 1.15.4-1.module_el8.3.0+2009+b272fdef | ALSA-2020:3662 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libzip | 1.5.2-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php | 7.3.20-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php-pear | 1:1.10.9-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php-pecl-apcu | 5.1.17-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php-pecl-xdebug | 2.8.0-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
| Rocky Linux 8 | php-pecl-zip | 1.15.4-1.module+el8.4.0+414+2e7afcdd | RLSA-2020:3662 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLES 15 SP3 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLES 15 SP2 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLES 15 SP1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP2 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLES for SAP 15 SP1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLE Micro 5.2 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLE Micro 5.1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLE HPC 15 SP2 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SLE HPC 15 SP1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SUSE Manager Server 4.1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SUSE Manager Retail Branch Server 4.1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SUSE Manager Proxy 4.1 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SUSE Enterprise Storage 7 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| SUSE Enterprise Storage 6 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | oniguruma | 6.9.7.1-1.2 | openSUSE-SU-2024:11111-1 |
| openSUSE Leap 15.4 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
| openSUSE Leap 15.3 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | oniguruma | 6.7.0-150000.3.3.1 | SUSE-SU-2022:3327-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | php7 | 7.3.9-r0 | — |
| Alpine v3.14 | php7 | 7.3.9-r0 | — |
| Alpine v3.13 | php7 | 7.3.9-r0 | — |
| Alpine v3.12 | php7 | 7.3.9-r0 | — |
| Alpine v3.11 | php7 | 7.3.9-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.10 | php7 | 7.3.9-r0 | — |
| Alpine v3.7 | php7 | 7.1.32-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | oniguruma +1 | 5.9.6-1.amzn2.0.1 | ALAS2-2019-1288 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | apcu-panel +2 | 5.1.17-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 8 | libzip +2 | 1.5.2-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 8 | oniguruma +1 | 6.8.2-2.1.el8_9 | ELSA-2024-0889 |
| Oracle Linux 8 | php +25 | 7.3.20-1.module+el8.2.0+7784+4033621d | ELSA-2020-3662 |
| Oracle Linux 8 | php-pear | 1:1.10.9-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 8 | php-pecl-xdebug | 2.8.0-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 8 | php-pecl-zip | 1.15.4-1.module+el8.2.0+5569+98c8b30d | ELSA-2020-3662 |
| Oracle Linux 7 | OVMF +1 | 1:1.3.2-1.el7 | ELSA-2020-5861 |
Advisories 20
- ALSA-2024:0889 Moderate: oniguruma security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2020:3662 Moderate: php:7.3 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2024-0218 Red Hat Enterprise Linux's oniguruma, tcpslice, c-ares: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- RHSA-2020:3662 Red Hat Security Advisory: php:7.3 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 18, 2026
- RHSA-2024:0889 Red Hat Security Advisory: oniguruma security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2024:0572 Red Hat Security Advisory: oniguruma security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2024:0409 Red Hat Security Advisory: oniguruma security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-4088-1 php5 vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4529-1 php7.0 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4527-1 php7.3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1854-1 libonig - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2431-1 libonig - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2020:3662 Moderate: php:7.3 security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:3327-1 Security update for oniguruma SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11111-1 libonig5-6.9.7.1-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- ELSA-2024-0889 Moderate: oniguruma security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 20, 2024
- ELSA-2020-5861 Important: edk2 security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 29, 2020
- ELSA-2020-3662 Moderate: php:7.3 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 9, 2020
- ALAS2-2019-1288 Moderate: oniguruma security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 19, 2019
References
- https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55
- [debian-lts-announce] 20190717 [SECURITY] [DLA 1854-1] libonig security update mailing-list
- FEDORA-2019-3f3d0953db vendor-advisory
- FEDORA-2019-5409bb5e68 vendor-advisory
- USN-4088-1 vendor-advisory
- https://support.f5.com/csp/article/K00103182
- https://support.f5.com/csp/article/K00103182?utm_source=f5support&%3Butm_medium=RSS
- GLSA-201911-03 vendor-advisory