Incorrect default permissions in kexec-tools
Priority LOW 24CWE-276Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 1 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality. This flaw affects kexec-tools shipped by Fedora versions prior to 2.0.21-8 and RHEL versions prior to 2.0.20-47.
Why it matters now
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | kexec-tools | Fedora kexec-tools versions prior to 2.0.21-8 and RHEL kexec-tools versions prior to 2.0.20-47 | — | No fix listed | CNA |
- kexec-tools Vendor— Affected Fedora kexec-tools versions prior to 2.0.21-8 and RHEL kexec-tools versions prior to 2.0.20-47 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kexec-tools_project:kexec-tools:*:*:*:*:*:*:*:* | before 2.0.21-8 | Vulnerable | Kexec-tools Project |
| cpe:2.3:o:fedoraproject:fedora:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Fedoraproject |
| cpe:2.3:a:kexec-tools_project:kexec-tools:*:*:*:*:*:*:*:* | before 2.0.20-47 | Vulnerable | Kexec-tools Project |
| cpe:2.3:o:redhat:enterprise_linux:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Red Hat |
- cpe:2.3:a:kexec-tools_project:kexec-tools:*:*:*:*:*:*:*:* Versions before 2.0.21-8 Vulnerable ·Kexec-tools Project
- cpe:2.3:o:fedoraproject:fedora:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Fedoraproject
- cpe:2.3:a:kexec-tools_project:kexec-tools:*:*:*:*:*:*:*:* Versions before 2.0.20-47 Vulnerable ·Kexec-tools Project
- cpe:2.3:o:redhat:enterprise_linux:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2021:4404 Released 2021-11-09 · Red Hat rating Lowkexec-tools security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) kexec-tools-2.0.20-57.el8
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2021:4404 |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20269
- 2026-10-03 Alias added: GHSA-55h9-m2g5-r4xm
References
Sources
- CVE-2021-20269 · CVE Program
- CVE-2021-20269 · NVD
- FIRST EPSS
- GHSA-55h9-m2g5-r4xm · GitHub Advisory Database · CC BY 4.0
- CVE-2021-20269 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences