SB2026020441 - Red Hat Enterprise Linux 10 update for glibc

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Main Vulnerability Database SB2026020441

SB2026020441 - Red Hat Enterprise Linux 10 update for glibc

Published: February 4, 2026

Security Bulletin ID SB2026020441
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2026-0861)

CWE-ID: CWE-190 - Integer overflow

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


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the memalign functions, such as memalign(), posix_memalign(),  aligned_alloc(). A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


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