Description
Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). This vulnerability is patched in 3.0.9.1 and 2.2.8.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rack | rack | >= 3.0.0, < 3.0.9.1, >= 0.4, < 2.2.8.1 | — |
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 | ruby-rack | 2.2.7-1.1 | — |
| Debian 13 | ruby-rack | 2.2.7-1.1 | — |
| Debian 12 | ruby-rack | 2.2.6.4-1+deb12u1 | DSA-5698-1 |
| Debian 11 | ruby-rack | 2.1.4-3+deb11u2 | DSA-5698-1 |
| Debian 10 | ruby-rack | 2.0.6-3+deb10u4 | DLA-3800-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | ruby-rack | 2.2.7-1ubuntu0.1 | USN-6837-1 |
| Ubuntu 22.04 LTS | ruby-rack | 2.1.4-5ubuntu1.1 | USN-7036-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | ruby-rack | 2.1.4-5ubuntu1+esm5 | USN-6837-2 |
| Ubuntu Pro 20.04 LTS | ruby-rack | 2.0.7-2ubuntu0.1+esm5 | USN-6837-2 |
| Ubuntu Pro 18.04 LTS | ruby-rack | 1.6.4-4ubuntu0.2+esm6 | USN-6837-2 |
| Ubuntu Pro 16.04 LTS | ruby-rack | 1.6.4-3ubuntu0.2+esm6 | USN-6837-2 |
| Ubuntu Pro 14.04 LTS | ruby-rack | 1.5.2-3+deb8u3ubuntu1~esm8 | USN-6837-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | pcs +1 | 0.11.7-2.el9_4 | RHSA-2024:2113 |
| RHEL 8 | pcs +1 | 0.10.18-2.el8_10 | RHSA-2024:2953 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Capsule 6 | python-pulp-container +1 | 2.16.9-2.el8pc | RHSA-2024:10806 |
| Red Hat Satellite Capsule 6 | rubygem-rack | 2.2.8.1-1.el8sat | RHSA-2024:10806 |
| Red Hat Satellite 6 | python-pulp-container +1 | 2.16.9-2.el8pc | RHSA-2024:10806 |
| Red Hat Satellite 6 | rubygem-activestorage | 6.1.7.7-1.el8sat | RHSA-2024:10806 |
| Red Hat Satellite 6 | rubygem-rack | 2.2.8.1-1.el8sat | RHSA-2024:10806 |
| RHEL 9.2 EUS | pcs +1 | 0.11.4-7.el9_2.1 | RHSA-2024:1846 |
| RHEL 9.0 EUS | pcs +1 | 0.11.1-10.el9_0.5 | RHSA-2024:1841 |
| RHEL 8.8 EUS | pcs +1 | 0.10.15-4.el8_8.2 | RHSA-2024:2581 |
| RHEL 8.6 EUS | pcs +1 | 0.10.12-6.el8_6.5 | RHSA-2024:3431 |
| RHEL 8.4 TUS | pcs +1 | 0.10.8-1.el8_4.5 | RHSA-2024:2584 |
| RHEL 8.4 E4S | pcs +1 | 0.10.8-1.el8_4.5 | RHSA-2024:2584 |
| RHEL 8.4 AUS | pcs +1 | 0.10.8-1.el8_4.5 | RHSA-2024:2584 |
| RHEL 8.2 TUS | pcs +1 | 0.10.4-6.el8_2.5 | RHSA-2024:2007 |
| RHEL 8.2 E4S | pcs +1 | 0.10.4-6.el8_2.5 | RHSA-2024:2007 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | pcs +1 | 0.11.7-2.el9_4 | ALSA-2024:2113 |
| AlmaLinux 8 | pcs +1 | 0.10.18-2.el8_10 | ALSA-2024:2953 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | pcs | 0.10.18-2.el8_10 | RLSA-2024:2953 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | rubygem-rack | 2.0.8-150000.3.21.2 | SUSE-SU-2024:0765-1 |
| SLES 15 SP4 | rubygem-rack | 2.0.8-150000.3.21.2 | SUSE-SU-2024:0765-1 |
| SLES 15 SP3 | rubygem-rack | 2.0.8-150000.3.21.2 | SUSE-SU-2024:0765-1 |
| SLES 15 SP2 | rubygem-rack | 2.0.8-150000.3.21.2 | SUSE-SU-2024:0765-1 |
| SLES 12 | rubygem-rack-1_4 | 1.4.5-9.3.1 | SUSE-SU-2024:0946-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE OpenStack Cloud Crowbar 9 | rubygem-rack | 1.6.13-3.22.1 | SUSE-SU-2024:1131-1 |
| SUSE OpenStack Cloud Crowbar 8 | rubygem-rack | 1.6.13-3.22.1 | SUSE-SU-2024:1131-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rubygem-rack | 3.0.9.1-1.1 | openSUSE-SU-2026:10358-1, openSUSE-SU-2025:14875-1, openSUSE-SU-2024:13726-1 |
| openSUSE Tumbleweed | rubygem-rack-2.2 | 2.2.8.1-1.1 | openSUSE-SU-2026:10286-1, openSUSE-SU-2025:14811-1, openSUSE-SU-2024:13727-1 |
| openSUSE Leap 15.5 | rubygem-rack | 2.0.8-150000.3.21.2 | SUSE-SU-2024:0765-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | pcs +1 | 0.9.169-3.amzn2.3.0.3 | ALAS2-2024-2492 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | pcs +1 | 0.11.7-2.el9_4 | ELSA-2024-2113 |
| Oracle Linux 8 | pcs +1 | 0.10.18-2.0.1.el8_10 | ELSA-2024-2953 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | kube-fluentd-operator +3 | 1.18.2-r3 | — |
| Wolfi rolling | ruby3.2-rack | 3.0.9.1-r0 | — |
| Wolfi rolling | ruby3.2-rack-2.2 | 2.2.8.1-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | rack | >= 3.0.0, < 3.0.9.1 | 3.0.9.1 | GHSA-22f2-v57c-j9cx |
| RubyGems | rack | >= 0.4, < 2.2.8.1 | 2.2.8.1 | GHSA-22f2-v57c-j9cx |
Advisories 30
- ALSA-2024:2113 Moderate: pcs security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:2953 Moderate: pcs security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:3431 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:2953 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:2584 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:2581 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:2113 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:2007 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:1841 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:1846 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- RHSA-2024:10806 Red Hat Security Advisory: Satellite 6.15.5 Async Update Red Hat Security Advisories (RHSA) · Sep 18, 2026
- USN-6837-2 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- openSUSE-SU-2026:10286-1 ruby4.0-rubygem-rack-2.2-2.2.22-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10358-1 ruby4.0-rubygem-rack-3.1.18-1.3 on GA media SUSE / openSUSE Security Updates · Mar 14, 2026
- DSA-5698-1 ruby-rack - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3800-1 ruby-rack - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-7036-1 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-6837-1 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- RLSA-2024:2953 Moderate: pcs security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2025:14811-1 ruby3.4-rubygem-rack-2.2-2.2.11-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0946-1 Security update for rubygem-rack-1_4 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13727-1 ruby3.3-rubygem-rack-2.2-2.2.8.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13726-1 ruby3.3-rubygem-rack-3.0.9.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0765-1 Security update for rubygem-rack SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0911 Red Hat Enterprise Linux (pcs): Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jul 16, 2025
- openSUSE-SU-2025:14875-1 ruby3.4-rubygem-rack-3.1.12-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2024:1131-1 Security update for rubygem-rack SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-2953 Moderate: pcs security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 23, 2024
- ELSA-2024-2113 Moderate: pcs security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 2, 2024
- ALAS2-2024-2492 Moderate: pcs security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 18, 2024
References
- https://github.com/rack/rack/security/advisories/GHSA-22f2-v57c-j9cx
- https://github.com/rack/rack/commit/6efb2ceea003c4b195815a614e00438cbd543462
- https://github.com/rack/rack/commit/d9c163a443b8cadf4711d84bd2c58cb9ef89cf49
- https://discuss.rubyonrails.org/t/denial-of-service-vulnerability-in-rack-content-type-parsing/84941
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-25126.yml
- https://lists.debian.org/debian-lts-announce/2024/04/msg00022.html
- https://security.netapp.com/advisory/ntap-20240510-0005/