Description
A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
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 | rpm | No fix yet | — |
| Debian 13 | rpm | No fix yet | — |
| Debian 12 | rpm | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rpm | No fix yet | — |
| Ubuntu 26.04 LTS | rpm | No fix yet | — |
| Ubuntu 24.04 LTS | rpm | No fix yet | — |
| Ubuntu 22.04 LTS | rpm | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | rpm | No fix yet | — |
| Ubuntu Pro 18.04 LTS | rpm | No fix yet | — |
| Ubuntu Pro 16.04 LTS | rpm | No fix yet | — |
| Ubuntu Pro 14.04 LTS | rpm | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | rpm +19 | 6.1.0-1.hum1 | RHSA-2026:66637 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | rpm +16 | 4.19.1.1-29.el10_3 | RLSA-2026:99595 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rpm +16 | 4.16.1.3-29.amzn2023.0.8 | ALAS2023-2026-3125 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rpm | No fix yet | — |
Advisories 3
- RLSA-2026:99595 Moderate: rpm security update Rocky Linux Security Advisories · Nov 13, 2026
- RHSA-2026:66637 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- ALAS2023-2026-3125 Important: rpm security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
References
- RHSA-2026:66637 vendor-advisory
- RHSA-2026:99595 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-84233 vdb-entry
- RHBZ#2478409 issue-tracking