CVE-2022-40304

Publication date 23 November 2022

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

Status

Package Ubuntu Release Status
libxml2 23.04 lunar
Not affected
22.10 kinetic
Fixed 2.9.14+dfsg-1ubuntu0.1
22.04 LTS jammy
Fixed 2.9.13+dfsg-1ubuntu0.2
20.04 LTS focal
Fixed 2.9.10+dfsg-5ubuntu0.20.04.5
18.04 LTS bionic
Fixed 2.9.4+dfsg1-6.1ubuntu1.8
16.04 LTS xenial
Fixed 2.9.3+dfsg1-1ubuntu0.7+esm4
14.04 LTS trusty
Fixed 2.9.1+dfsg1-3ubuntu4.13+esm4

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libxml2

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5760-1
    • libxml2 vulnerabilities
    • 5 December 2022
    • USN-5760-2
    • libxml2 vulnerabilities
    • 5 December 2022

Other references