A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.
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Fixes

Solution

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Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Mon, 02 Feb 2026 12:45:00 +0000

Type Values Removed Values Added
Description A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.
Title Libxml2: memory leak leading to local denial of service in xmllint interactive shell
First Time appeared Redhat
Redhat enterprise Linux
Redhat jboss Core Services
Redhat openshift
Weaknesses CWE-401
CPEs cpe:/a:redhat:jboss_core_services:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat jboss Core Services
Redhat openshift
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-02-02T12:38:14.588Z

Reserved: 2026-02-02T11:43:42.248Z

Link: CVE-2026-1757

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-02T13:15:58.580

Modified: 2026-02-02T13:15:58.580

Link: CVE-2026-1757

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses