--- title: "CVE-2018-4315\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2018-4315?format=md keywords: index, follow --- # CVE-2018-4315 Publication date 28 September 2018 Last updated 25 August 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **8.8 · High** [Score breakdown](https://ubuntu.com/security/CVE-2018-4315?format=md#impact-score) Toggle side navigation ## Description A use after free issue was addressed with improved memory management. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7. [Read the notes from the security team](https://ubuntu.com/security/CVE-2018-4315?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | qtwebkit | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Not in release | | 20.04 LTS focal | Not in release | | 19.10 eoan | Ignored end of life | | 19.04 disco | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | qtwebkit-opensource-src | 24.04 LTS noble | Ignored | | 23.10 mantic | Ignored | | 23.04 lunar | Ignored end of life, was needs-triage | | 22.10 kinetic | Ignored end of life, was needs-triage | | 22.04 LTS jammy | Ignored | | 21.10 impish | Ignored end of life | | 21.04 hirsute | Ignored end of life | | 20.10 groovy | Ignored end of life | | 20.04 LTS focal | Ignored | | 19.10 eoan | Ignored end of life | | 19.04 disco | Ignored end of life | | 18.10 cosmic | Ignored end of life | | 18.04 LTS bionic | Ignored end of standard support, was needs-triage | | 16.04 LTS xenial | Ignored end of standard support, was needs-triage | | 14.04 LTS trusty | Not in release | | qtwebkit-source | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Not in release | | 20.04 LTS focal | Not in release | | 19.10 eoan | Not in release | | 19.04 disco | Ignored end of life | | 18.10 cosmic | Ignored end of life | | 18.04 LTS bionic | Ignored end of standard support, was needs-triage | | 16.04 LTS xenial | Ignored end of standard support, was needs-triage | | 14.04 LTS trusty | Not in release | | webkit2gtk | 24.04 LTS noble | Fixed 2.22.2-1ubuntu1 | | 23.10 mantic | Fixed 2.22.2-1ubuntu1 | | 23.04 lunar | Fixed 2.22.2-1ubuntu1 | | 22.10 kinetic | Fixed 2.22.2-1ubuntu1 | | 22.04 LTS jammy | Fixed 2.22.2-1ubuntu1 | | 21.10 impish | Fixed 2.22.2-1ubuntu1 | | 21.04 hirsute | Fixed 2.22.2-1ubuntu1 | | 20.10 groovy | Fixed 2.22.2-1ubuntu1 | | 20.04 LTS focal | Fixed 2.22.2-1ubuntu1 | | 19.10 eoan | Fixed 2.22.2-1ubuntu1 | | 19.04 disco | Fixed 2.22.2-1ubuntu1 | | 18.10 cosmic | Fixed 2.22.2-1ubuntu1 | | 18.04 LTS bionic | Fixed 2.22.2-0ubuntu0.18.04.1 | | 16.04 LTS xenial | Ignored end of standard support, was deferred | | 14.04 LTS trusty | Not in release | | webkitgtk | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Not in release | | 20.04 LTS focal | Not in release | | 19.10 eoan | Not in release | | 19.04 disco | Not in release | | 18.10 cosmic | Ignored end of life | | 18.04 LTS bionic | Ignored end of standard support, was needs-triage | | 16.04 LTS xenial | Ignored end of standard support, was needs-triage | | 14.04 LTS trusty | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Notes --- ### [jdstrand](https://launchpad.net/~jdstrand) webkit receives limited support. For details, see https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8 ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 8.8 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | Low | | Privileges required | None | | User interaction | Required | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | High | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 8.8 · High | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4315) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-4315) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-4315) * [Debian](https://security-tracker.debian.org/tracker/CVE-2018-4315) ### Related Ubuntu Security Notices (USN) + [USN-3781-1](https://usn.ubuntu.com/USN-3781-1) + WebKitGTK+ vulnerabilities + 3 October 2018 ### Other references * * *