CVE-2026-6843 Details
Description
A flaw was found in nano. A local user could exploit a format string vulnerability in the `statusline()` function. By creating a directory with a name containing `printf` specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the `nano` application.
A format string vulnerability has been identified in the nano text editor, specifically within the statusline() function. This vulnerability allows local users to cause a segmentation fault, leading to a denial-of-service condition. The issue arises when a directory name containing printf specifiers is created. Nano attempts to display this name, but the improper handling of the format specifiers causes a crash.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-6843 | [email protected] | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2460017 | [email protected] | Issue TrackingThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-134 | Use of Externally-Controlled Format String | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| gnu nano | 8.7 |
CPE
Remediation
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| redhat openshift container platform | 4.0 |
CPE
Remediation
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| redhat enterprise linux | 6.0 7.0 8.0 9.0 10.0 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 1, 2026 | CVE Modified | [email protected] |
| Aug 31, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 20, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | [email protected] |