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CVE-2026-1757

CVE-2026-1757 · Libxml2: memory leak leading to local denial of service in xmllint interactive shell

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.2 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat hardened images

    Versions
    • ≥ 2.15.2-0.3.hum1: Not affected (rpm)

    No fix published

  • red hat enterprise linux 10

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • red hat jboss core services

    No fix published

  • red hat openshift container platform 4

    No fix published

  • libxml2 Debian:12

    Versions
    • 2.9.14+dfsg-1.2
    • 2.9.14+dfsg-1.3~deb12u1
    • 2.9.14+dfsg-1.3~deb12u2
    • 2.9.14+dfsg-1.3~deb12u3
    • 2.9.14+dfsg-1.3~deb12u4
    • 2.9.14+dfsg-1.3~deb12u5
    Affected ranges
    • ECOSYSTEM: < 2.9.14+dfsg-1.3~deb12u6

    Update to 2.9.14+dfsg-1.3~deb12u6

  • libxml2 Debian:13

    Versions
    • 2.12.7+dfsg+really2.9.14-2.1
    • 2.12.7+dfsg+really2.9.14-2.1+deb13u1
    • 2.12.7+dfsg+really2.9.14-2.1+deb13u2
    Affected ranges
    • ECOSYSTEM: < 2.12.7+dfsg+really2.9.14-2.1+deb13u3

    Update to 2.12.7+dfsg+really2.9.14-2.1+deb13u3

  • libxml2 Debian:14

    Versions
    • 2.12.7+dfsg+really2.9.14-2.1
    • 2.13.1+dfsg-0exp1
    • 2.13.3+dfsg-0exp1
    • 2.13.3+dfsg-0exp2
    • 2.14.1+dfsg-0exp1
    • 2.14.2+dfsg-0exp1
    • 2.14.3+dfsg-0exp1
    • 2.14.3+dfsg-0exp2
    • 2.14.3+dfsg-0exp3
    • 2.14.4+dfsg-0exp1
    • 2.14.5+dfsg-0.1
    • 2.14.5+dfsg-0.2
    • 2.14.5+dfsg-0exp1
    • 2.14.5+dfsg-0exp2
    • 2.14.6+dfsg-0.1
    • 2.15.0+dfsg-0.1
    • 2.15.0+dfsg-0.2
    • 2.15.0+dfsg-0.3
    • 2.15.1+dfsg-0.1
    • 2.15.1+dfsg-0.2
    • 2.15.1+dfsg-0.3
    • 2.15.1+dfsg-0.4
    • 2.15.1+dfsg-0.5
    • 2.15.1+dfsg-1
    • 2.15.1+dfsg-2
    Affected ranges
    • ECOSYSTEM: < 2.15.2+dfsg-0.1

    Update to 2.15.2+dfsg-0.1

  • libxml2 Ubuntu:25.10

    Versions
    • 2.12.7+dfsg+really2.9.14-0.4
    • 2.12.7+dfsg+really2.9.14-0.4ubuntu0.1
    • 2.12.7+dfsg+really2.9.14-1
    • 2.14.3+dfsg-0exp1
    • 2.14.3+dfsg-0exp2
    • 2.14.3+dfsg-0exp3
    • 2.14.4+dfsg-0exp1
    • 2.14.5+dfsg-0exp1
    • 2.14.5+dfsg-0exp2
    • 2.14.5+dfsg-0.1
    • 2.14.5+dfsg-0.2
    • 2.14.5+dfsg-0.2ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 2.14.5+dfsg-0.2ubuntu0.2

    Update to 2.14.5+dfsg-0.2ubuntu0.2

Original sources

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