How to Fix CVE-2026-6862: Red Hat Enterprise Linux 10 (Bundle Sibling)

By Sai Kiran Pandrala

Last verified: 2026-05-25

CVE-2026-6862 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.

What's different about CVE-2026-6862?

A flaw was found in libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could exploit this vulnerability by providing a specially crafted device path node. This can lead to infinite recursion, causing stack exhaustion and a process crash, resulting in a denial of service (DoS).

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

How to fix CVE-2026-6862

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-2026-6862 fixed by the same patch as CVE-2026-2708?

Yes. CVE-2026-6862 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-2026-6862?

The CVSS base score is 5.5 (Medium).

Is it being exploited?

It is not currently listed in CISA KEV.

References

• Official vendor advisory: https://access.redhat.com/security/cve/CVE-2026-6862
• NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2026-6862
• CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• Primary write-up: How to Fix CVE-2026-2708

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