Vulnerability · Published Aug 14, 2026 · Assigned by redhat
CVE-2026-19617Libdm: lvm2: libdm: denial of service via uncontrolled recursion in config parser
Medium 5.5
In plain English
A medium-severity resource allocation without limits in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | lvm2 | no fix listed | DEBIAN-CVE-2026-19617 |
| Debian:13 | lvm2 | no fix listed | DEBIAN-CVE-2026-19617 |
| Debian:14 | lvm2 | no fix listed | DEBIAN-CVE-2026-19617 |
| Ubuntu:22.04:LTS | lvm2 | no fix listed | UBUNTU-CVE-2026-19617 |
| Ubuntu:24.04:LTS | lvm2 | no fix listed | UBUNTU-CVE-2026-19617 |
| Ubuntu:26.04:LTS | lvm2 | no fix listed | UBUNTU-CVE-2026-19617 |
| Ubuntu:26.10 | lvm2 | no fix listed | UBUNTU-CVE-2026-19617 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Hardened Images | see references |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
| Red Hat | Red Hat OpenShift Container Platform 5 | see references |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- RHSA-2026:73989 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-19617 vdb-entry, x_refsource_REDHAT
- RHBZ#2514626 issue-tracking, x_refsource_REDHAT