SB20260803100 - Red Hat Enterprise Linux 10 update for delve

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Main Vulnerability Database SB20260803100

SB20260803100 - Red Hat Enterprise Linux 10 update for delve

Published: August 3, 2026

Security Bulletin ID SB20260803100
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Double free (CVE-ID: CVE-2026-33811)

CWE-ID: CWE-415 - Double Free

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to double free in net.LookupCNAME and Resolver.LookupCNAME when processing a very long CNAME response with the cgo DNS resolver. A remote attacker can send a specially crafted DNS response to cause a denial of service.


2) Resource exhaustion (CVE-ID: CVE-2026-27145)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in crypto/x509 certificate hostname verification when processing certificates with a large DNS subject alternative name list. A remote attacker can present a specially crafted certificate to cause a denial of service.

The excessive verification cost occurs before the certificate chain is built, so the overhead is incurred even for untrusted certificates.


Remediation

Install update from vendor's website.

References