SB2026020439 - openEuler 20.03 LTS SP4 update for glibc

Description

This security bulletin contains information about 2 vulnerabilities.

1) Use of uninitialized resource (CVE-ID: CVE-2025-15281)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 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/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to usage of uninitialized resources when calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND. A remote attacker can pass specially crafted data to the application, trigger an uninitialized usage of resources and crash the application. 

2) Use of uninitialized resource (CVE-ID: CVE-2026-0915)

CWE-ID: CWE-908 - Use of Uninitialized Resource

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

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to usage of uninitialized resources when calling getnetbyaddr() or getnetbyaddr_r() functions with a configured nsswitch.conf and "net==0" in _nss_dns_getnetbyaddr_r. A remote attacker can trick the victim to initiate queries and force the library to leak contents to the configured DNS resolver. 

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1266