Red Hat Enterprise Linux 10 Router Advertisement infinite loop

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k2.00-

Summaryinfo

A vulnerability identified as problematic has been detected in Red Hat Enterprise Linux 10. This issue affects some unknown processing of the component Router Advertisement Handler. Performing a manipulation results in infinite loop. This vulnerability is cataloged as CVE-2026-14258. The attack must originate from the local network. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Red Hat Enterprise Linux 10. This affects some unknown functionality of the component Router Advertisement Handler. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-14258 since 06/30/2026. The exploitability is told to be easy. The attack can only be initiated within the local network. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/01/2026).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-40941). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

06/30/2026 CVE reserved
07/01/2026 +1 days Advisory disclosed
07/01/2026 +0 days VulDB entry created
07/01/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: 415
Status: Confirmed

CVE: CVE-2026-14258 (🔒)
GCVE (CVE): GCVE-0-2026-14258
GCVE (VulDB): GCVE-100-375489
EUVD: 🔒

Entryinfo

Created: 07/01/2026 13:38
Updated: 07/01/2026 17:01
Changes: 07/01/2026 13:38 (67), 07/01/2026 17:01 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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