Description
A flaw was found in libdm. A local attacker could craft a malicious Logical Volume Manager (LVM) metadata configuration with deeply nested structures. This could lead to uncontrolled recursion in the libdm configuration file parser, exhausting the stack and causing any LVM command reading the metadata to crash. This vulnerability results in a Denial of Service (DoS) for affected systems.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| 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 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
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 | lvm2 | No fix yet | — |
| Debian 13 | lvm2 | No fix yet | — |
| Debian 12 | lvm2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | lvm2 | No fix yet | — |
| Ubuntu 26.04 LTS | lvm2 | No fix yet | — |
| Ubuntu 24.04 LTS | lvm2 | No fix yet | — |
| Ubuntu 22.04 LTS | lvm2 | No fix yet | — |
| Ubuntu 20.04 LTS | lvm2 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | lvm2 | No fix yet | — |
| Ubuntu 16.04 LTS | lvm2 | No fix yet | — |
| Ubuntu 14.04 LTS | lvm2 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | lvm2 +5 | 2.03.43-1.hum1 | RHSA-2026:73989 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | device-mapper +5 | 1.02.185-1.amzn2023.0.6 | ALAS2023-2026-3376 |
| Amazon Linux 2023 | lvm2 +5 | 2.03.16-1.amzn2023.0.6 | ALAS2023-2026-3376 |
| Amazon Linux 2 | device-mapper +5 | 7:1.02.170-6.amzn2.5.2 | ALAS2-2026-4073 |
| Amazon Linux 2 | lvm2 +9 | 7:2.02.187-6.amzn2.5.2 | ALAS2-2026-4073 |
| Amazon Linux 2 | lvm2-python-boom | 7:1.2-2.amzn2.5.2 | ALAS2-2026-4073 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | lvm2 | No fix yet | — |
Advisories 3
- ALAS2023-2026-3376 Moderate: lvm2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 9, 2026
- ALAS2-2026-4073 Moderate: lvm2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 9, 2026
- RHSA-2026:73989 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 3, 2026
References
- RHSA-2026:73989 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-19617 vdb-entry
- RHBZ#2514626 issue-tracking