critical
CVE-2018-14600
libX11: Out of Bounds write in XListExtensions in ListExt.c
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Amazon (medium), Oracle (medium), Ubuntu (medium).
Description
An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.10 | libx11 | 1.6.6-r0 |
| alpine 3.11 | libx11 | 1.6.6-r0 |
| alpine 3.12 | libx11 | 1.6.6-r0 |
| alpine 3.13 | libx11 | 1.6.6-r0 |
| alpine 3.14 | libx11 | 1.6.6-r0 |
| alpine 3.15 | libx11 | 1.6.6-r0 |
| alpine 3.16 | libx11 | 1.6.6-r0 |
| alpine 3.17 | libx11 | 1.6.6-r0 |
| alpine 3.18 | libx11 | 1.6.6-r0 |
| alpine 3.19 | libx11 | 1.6.6-r0 |
| alpine 3.20 | libx11 | 1.6.6-r0 |
| alpine 3.21 | libx11 | 1.6.6-r0 |
Show all 73 entries from 38 sources
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.10 | libx11 | 1.6.6-r0 |
| alpine 3.11 | libx11 | 1.6.6-r0 |
| alpine 3.12 | libx11 | 1.6.6-r0 |
| alpine 3.13 | libx11 | 1.6.6-r0 |
| alpine 3.14 | libx11 | 1.6.6-r0 |
| alpine 3.15 | libx11 | 1.6.6-r0 |
| alpine 3.16 | libx11 | 1.6.6-r0 |
| alpine 3.17 | libx11 | 1.6.6-r0 |
| alpine 3.18 | libx11 | 1.6.6-r0 |
| alpine 3.19 | libx11 | 1.6.6-r0 |
| alpine 3.20 | libx11 | 1.6.6-r0 |
| alpine 3.21 | libx11 | 1.6.6-r0 |
| alpine 3.22 | libx11 | 1.6.6-r0 |
| alpine 3.23 | libx11 | 1.6.6-r0 |
| alpine 3.24 | libx11 | 1.6.6-r0 |
| alpine 3.5 | libx11 | 1.6.6-r0 |
| alpine 3.6 | libx11 | 1.6.6-r0 |
| alpine 3.7 | libx11 | 1.6.6-r0 |
| alpine 3.8 | libx11 | 1.6.6-r0 |
| alpine 3.9 | libx11 | 1.6.6-r0 |
| alpine edge | libx11 | 1.6.6-r0 |
| amazon linux 2 | xorg-x11-server-Xdmx | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-Xephyr | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-Xnest | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-Xorg | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-Xvfb | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-Xwayland | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-common | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-debuginfo | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-devel | 1.20.4-7.amzn2.0.1 |
| amazon linux 2 | xorg-x11-server-source | 1.20.4-7.amzn2.0.1 |
| debian 11 | libx11 | 2:1.6.6-1 |
| debian 12 | libx11 | 2:1.6.6-1 |
| debian 13 | libx11 | 2:1.6.6-1 |
| debian 14 | libx11 | 2:1.6.6-1 |
| debian 7 | libx11 | no fix listed |
| debian 8 | libx11 | 2:1.6.2-3+deb8u2 |
| debian 9 | libx11 | 2:1.6.4-3+deb9u1 |
| echo | libx11 | 2:1.6.6-1 |
| Oracle Linux 7 | gdm | 1:3.28.2-16.el7 |
| Oracle Linux 7 | gdm-devel | 1:3.28.2-16.el7 |
| Oracle Linux 7 | gdm-pam-extensions-devel | 1:3.28.2-16.el7 |
| Oracle Linux 7 | libX11 | 1.6.7-2.el7 |
| Oracle Linux 7 | libX11-common | 1.6.7-2.el7 |
| Oracle Linux 7 | libX11-devel | 1.6.7-2.el7 |
| Oracle Linux 7 | libxkbcommon | 0.7.1-3.el7 |
| Oracle Linux 7 | libxkbcommon-devel | 0.7.1-3.el7 |
| Oracle Linux 7 | libxkbcommon-x11 | 0.7.1-3.el7 |
| Oracle Linux 7 | libxkbcommon-x11-devel | 0.7.1-3.el7 |
| Oracle Linux 7 | mesa-libGLw | 8.0.0-5.el7 |
| Oracle Linux 7 | mesa-libGLw-devel | 8.0.0-5.el7 |
| Oracle Linux 7 | xorg-x11-drv-ati | 19.0.1-2.el7 |
| Oracle Linux 7 | xorg-x11-drv-vesa | 2.4.0-3.el7 |
| Oracle Linux 7 | xorg-x11-drv-wacom | 0.36.1-3.el7 |
| Oracle Linux 7 | xorg-x11-drv-wacom-devel | 0.36.1-3.el7 |
| Oracle Linux 7 | xorg-x11-server-Xdmx | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-Xephyr | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-Xnest | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-Xorg | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-Xvfb | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-Xwayland | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-common | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-devel | 1.20.4-7.el7 |
| Oracle Linux 7 | xorg-x11-server-source | 1.20.4-7.el7 |
| Red Hat | libX11 | no fix listed |
| Red Hat | libX11-common | no fix listed |
| Red Hat | libX11-devel | no fix listed |
| ubuntu 14.04 | libx11 | 2:1.6.2-1ubuntu2.1 |
| ubuntu 14.04-ESM | libx11 | 2:1.6.2-1ubuntu2.1 |
| ubuntu 16.04 | libx11 | 2:1.6.3-1ubuntu2.1 |
| ubuntu 16.04-ESM | libx11 | 2:1.6.3-1ubuntu2.1 |
| ubuntu 18.04 | libx11 | 2:1.6.4-3ubuntu0.1 |
| ubuntu 18.04-ESM | libx11 | 2:1.6.4-3ubuntu0.1 |
References
- http://www.openwall.com/lists/oss-security/2018/08/21/6
- http://www.securityfocus.com/bid/105177
- http://www.securitytracker.com/id/1041543
- https://access.redhat.com/errata/RHSA-2019:2079
- https://access.redhat.com/security/cve/CVE-2018-14600
- https://bugzilla.suse.com/show_bug.cgi?id=1102068
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea
- https://linux.oracle.com/cve/CVE-2018-14600.html
All 18 references
- https://linux.oracle.com/errata/ELSA-2019-2079.html
- https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
- https://lists.x.org/archives/xorg-announce/2018-August/002916.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-14600
- https://security.gentoo.org/glsa/201811-01
- https://ubuntu.com/security/notices/USN-3758-1
- https://ubuntu.com/security/notices/USN-3758-2
- https://usn.ubuntu.com/3758-1/
- https://usn.ubuntu.com/3758-2/
- https://www.cve.org/CVERecord?id=CVE-2018-14600