Red HatCVE-2026-14258
Red Hat dhcpcd: resource exhaustion
Medium6.5CVE-2026-14258 · Published Jul 1, 2026 · updated Aug 12, 2026
A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.
Affected versions
The source does not list versions here. See the source advisory for affected products and fixes.
Details and references
- CVSS 3.1
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-835
- www.cve.org/CVERecord?id=CVE-2026-14258
- nvd.nist.gov/vuln/detail/CVE-2026-14258
- access.redhat.com/errata/RHSA-2026:54210
- access.redhat.com/security/cve/CVE-2026-14258
- bugzilla.redhat.com/show_bug.cgi?id=2462305
- github.com/NetworkConfiguration/dhcpcd/commit/75289ca
- github.com/NetworkConfiguration/dhcpcd/issues/415
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 1 | Red Hat Satellite 6: improper access control | Medium6.5 | No fix yet |
| Jul 1 | Red Hat Satellite 6: information disclosure | Medium4.3 | No fix yet |
| Jul 1 | Red Hat Satellite 6: information disclosure | Medium6.5 | No fix yet |
| Jul 1 | Red Hat Enterprise Linux: null pointer dereference | Medium6.5 | No fix yet |
| Jul 1 | Red Hat Enterprise Linux: resource exhaustion | Medium5.5 | No fix yet |
| Jul 1 | Red Hat Feast Feature Server: denial of service | Critical9.1 | 0.59.0 |