EUVD-2026-70448
GHSA-959m-jjvx-c559
Severity by source
AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Local file-parsing attack (AV:L) requiring user to invoke gfs2_edit on crafted image (UI:R); stack overflow exploitation on mitigated RHEL warrants AC:H; no privileges needed to trigger parsing (PR:N).
Primary rating from Vendor (redhat).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
A stack out-of-bounds write vulnerability was found in gfs2-utils. In gfs2_edit, the di_height field from on-disk inode metadata is used as an array index without bounds checking, causing a stack buffer overflow that may lead to arbitrary code execution when processing crafted GFS2 filesystem images.
AnalysisAI
Stack buffer overflow in the gfs2_edit utility within gfs2-utils allows arbitrary code execution when a user processes a crafted GFS2 filesystem image. The di_height field from on-disk inode metadata is used as an array index with no bounds validation, enabling a stack overwrite with fully controlled data from an untrusted image. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation unconditionally requires a user to locally execute gfs2_edit and supply the crafted GFS2 image as input - user interaction (UI:R) is mandatory and cannot be bypassed remotely. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.0 with vector AV:L/AC:H/PR:N/UI:R accurately captures the exploitation profile: the attack is local, requires user interaction to execute gfs2_edit against a malicious image, and achieving reliable code execution from a stack overflow on modern RHEL (with stack canaries, ASLR, and NX enforced by default) is non-trivial, justifying AC:H. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the updated gfs2-utils package issued by Red Hat for the applicable RHEL major version (7, 8, or 9) via the standard yum/dnf update mechanism and consult https://access.redhat.com/security/cve/CVE-2026-71220 for the specific fixed RPM version, which was not independently confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: conduct a comprehensive inventory of RHEL 7, 8, and 9 systems with gfs2-utils installed, identify which users and service accounts have access to gfs2_edit, and immediately restrict execution via RBAC and sudo configuration to only essential administrators. …
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View allVendor StatusVendor
SUSE
Severity: Important| Product | Status |
|---|---|
| SUSE Linux Enterprise High Availability Extension 15 SP7 | Affected |
| SUSE Linux Enterprise High Availability Extension 16.0 | Affected |
| SUSE Linux Enterprise High Availability Extension 16.1 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Affected |
| openSUSE Leap 16.0 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP5 | Affected |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | Affected |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP1 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP2 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP3 | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP4 | Affected |
| SUSE Linux Enterprise High Availability Extension 15 SP6 | Affected |
| openSUSE Leap 15.4 | Affected |
| openSUSE Leap 15.5 | Affected |
| openSUSE Leap 15.6 | Affected |
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