SB2026070984 - openEuler 24.03 LTS SP3 update for edk2

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Main Vulnerability Database SB2026070984

SB2026070984 - openEuler 24.03 LTS SP3 update for edk2

Published: July 9, 2026

Security Bulletin ID SB2026070984
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2026-42770)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to recover the victim's private key.

The vulnerability exists due to improper input validation in EVP_PKEY_derive_set_peer() when validating a DHX (X9.42) peer key using the peer-supplied q parameter for subgroup membership checks. A remote attacker can present a forged DHX peer key to recover the victim's private key.

The realistic attack surface is narrow and is principally limited to deployments using long-lived X9.42 DHX static keys with interactive protocols.


Remediation

Install update from vendor's website.

References