⚠ Reference material — not professional advice. Test in staging, back up first, verify against your specific version. Use your own judgment for your environment.
● Medium · CVSS 5.5

How to Fix CVE-2026-6843: Red Hat Enterprise Linux 10 (Bundle Sibling)

By Sai Kiran Pandrala

Last verified: 2026-05-25

CVE-2026-6843 is a sibling vulnerability in the same vendor advisory as CVE-2026-2708. Applying the patched build named in the primary write-up closes this CVE as well.

⚡ At a glance
SeverityCVSS 5.5 - Medium
Actively exploited?Not currently in CISA KEV
AffectedSame as the bundle - see CVE-2026-2708
Fixed inSame patched build as CVE-2026-2708 (See vendor advisory)
Type (CWE)CWE-134: Use of Externally-Controlled Format String

What's different about CVE-2026-6843?

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.

The technical impact and remediation are identical to the primary CVE in the bundle. The same vendor patch closes both.

How to fix CVE-2026-6843

Apply the patched build per the primary write-up: How to Fix CVE-2026-2708.

The patch installation procedure, verification commands, and interim mitigations are documented there. Reusing one runbook keeps the rollout consistent across the bundle.

Frequently asked questions

Is CVE-2026-6843 fixed by the same patch as CVE-2026-2708?

Yes. CVE-2026-6843 ships in the same vendor advisory as CVE-2026-2708. Applying the patched build named in the primary write-up closes both.

What is the CVSS score for CVE-2026-6843?

The CVSS base score is 5.5 (Medium).

Is it being exploited?

It is not currently listed in CISA KEV.

References

*Part of the Red Hat Enterprise Linux 10 bundle. Full procedure at CVE-2026-2708.*