Description
It was discovered that libICE before 1.0.9-8 used a weak entropy to generate keys. A local attacker could potentially use this flaw for session hijacking using the information available from the process list.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xorg | libICE | 1.0.9-8 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libice | 2:1.0.9-2 | — |
| Debian 13 | libice | 2:1.0.9-2 | — |
| Debian 12 | libice | 2:1.0.9-2 | — |
| Debian 8 | libice | 2:1.0.9-1+deb8u1 | DLA-2002-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libice | 2:1.0.9-2ubuntu0.18.04.1 | USN-5744-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libice | 2:1.0.9-1ubuntu0.16.04.1+esm1 | USN-5744-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libICE +1 | 1.0.9-9.el7 | RHSA-2017:1865 |
| RHEL 7 | libX11 +2 | 1.6.5-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXaw +1 | 1.0.13-4.el7 | RHSA-2017:1865 |
| RHEL 7 | libXcursor +1 | 1.1.14-8.el7 | RHSA-2017:1865 |
| RHEL 7 | libXdmcp +1 | 1.1.2-6.el7 | RHSA-2017:1865 |
| RHEL 7 | libXfixes +1 | 5.0.3-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXfont +1 | 1.5.2-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXfont2 +1 | 2.0.1-2.el7 | RHSA-2017:1865 |
| RHEL 7 | libXi +1 | 1.7.9-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXpm +1 | 3.5.12-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXrandr +1 | 1.5.1-2.el7 | RHSA-2017:1865 |
| RHEL 7 | libXrender +1 | 0.9.10-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXt +1 | 1.1.5-3.el7 | RHSA-2017:1865 |
| RHEL 7 | libXtst +1 | 1.2.3-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXv +1 | 1.0.11-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXvMC +1 | 1.0.10-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libXxf86vm +1 | 1.1.4-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libdrm +2 | 2.4.74-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libepoxy +1 | 1.3.1-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libevdev +2 | 1.5.6-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libfontenc +1 | 1.1.3-3.el7 | RHSA-2017:1865 |
| RHEL 7 | libinput +1 | 1.6.3-2.el7 | RHSA-2017:1865 |
| RHEL 7 | libvdpau +2 | 1.1.1-3.el7 | RHSA-2017:1865 |
| RHEL 7 | libwacom +2 | 0.24-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libxcb +2 | 1.12-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libxkbcommon +3 | 0.7.1-1.el7 | RHSA-2017:1865 |
| RHEL 7 | libxkbfile +1 | 1.0.9-3.el7 | RHSA-2017:1865 |
| RHEL 7 | mesa +16 | 17.0.1-6.20170307.el7 | RHSA-2017:1865 |
| RHEL 7 | mesa-private-llvm +1 | 3.9.1-3.el7 | RHSA-2017:1865 |
| RHEL 7 | vulkan +2 | 1.0.39.1-2.el7 | RHSA-2017:1865 |
| RHEL 7 | xcb-proto | 1.12-2.el7 | RHSA-2017:1865 |
| RHEL 7 | xkeyboard-config +1 | 2.20-1.el7 | RHSA-2017:1865 |
| RHEL 7 | xorg-x11-proto-devel | 7.7-20.el7 | RHSA-2017:1865 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | libICE | 1.0.8-12.1 | SUSE-SU-2018:0337-1 |
| SLES 12 SP2 | libICE | 1.0.8-10.1 | SUSE-SU-2017:1835-1 |
| SLES 11 SP4 | xorg-x11-libICE | 7.4-3.1 | SUSE-SU-2017:1848-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | libICE | 1.0.8-12.1 | SUSE-SU-2018:0337-1 |
| SLES for SAP 12 SP2 | libICE | 1.0.8-10.1 | SUSE-SU-2017:1835-1 |
| SLES for SAP 11 SP4 | xorg-x11-libICE | 7.4-3.1 | SUSE-SU-2017:1848-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libICE | 1.0.10-1.8 | openSUSE-SU-2024:10917-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libice | 1.0.10-r0 | — |
| Alpine v3.23 | libice | 1.0.10-r0 | — |
| Alpine v3.22 | libice | 1.0.10-r0 | — |
| Alpine v3.21 | libice | 1.0.10-r0 | — |
| Alpine v3.20 | libice | 1.0.10-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libice | 1.0.10-r0 | — |
| Alpine v3.18 | libice | 1.0.10-r0 | — |
| Alpine v3.17 | libice | 1.0.10-r0 | — |
| Alpine v3.16 | libice | 1.0.10-r0 | — |
| Alpine v3.15 | libice | 1.0.10-r0 | — |
| Alpine v3.14 | libice | 1.0.10-r0 | — |
| Alpine v3.13 | libice | 1.0.10-r0 | — |
| Alpine v3.12 | libice | 1.0.10-r0 | — |
| Alpine v3.11 | libice | 1.0.10-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libICE +1 | 1.0.9-9.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libX11 +2 | 1.6.5-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXaw +1 | 1.0.13-4.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXcursor +1 | 1.1.14-8.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXdmcp +1 | 1.1.2-6.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXfixes +1 | 5.0.3-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXfont +1 | 1.5.2-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXfont2 +1 | 2.0.1-2.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXi +1 | 1.7.9-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXpm +1 | 3.5.12-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXrandr +1 | 1.5.1-2.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXrender +1 | 0.9.10-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXt +1 | 1.1.5-3.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXtst +1 | 1.2.3-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXv +1 | 1.0.11-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXvMC +1 | 1.0.10-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libXxf86vm +1 | 1.1.4-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libdrm +2 | 2.4.74-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libepoxy +1 | 1.3.1-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libevdev +2 | 1.5.6-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libfontenc +1 | 1.1.3-3.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libinput +1 | 1.6.3-2.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libvdpau +2 | 1.1.1-3.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libwacom +2 | 0.24-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libxcb +2 | 1.12-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libxkbcommon +3 | 0.7.1-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | libxkbfile +1 | 1.0.9-3.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | mesa-libGL +15 | 17.0.1-6.20170307.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | mesa-private-llvm +1 | 3.9.1-3.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | vulkan +2 | 1.0.39.1-2.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | xcb-proto | 1.12-2.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | xkeyboard-config +1 | 2.20-1.el7 | ELSA-2017-1865 |
| Oracle Linux 7 | xorg-x11-proto-devel | 7.7-20.el7 | ELSA-2017-1865 |
Advisories 8
- RHSA-2017:1865 Red Hat Security Advisory: X.org X11 libraries security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-5744-1 libice vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2002-1 libice - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1848-1 Security update for xorg-x11-libICE SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1835-1 Security update for libICE SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10917-1 libICE-devel-1.0.10-1.8 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0337-1 Security update for libICE SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-1865 Moderate: X.org X11 libraries security, bug fix and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
References
- https://cgit.freedesktop.org/xorg/lib/libICE/commit/?id=ff5e59f32255913bb1cdf51441b98c9107ae165b
- GLSA-201704-03 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2626
- RHSA-2017:1865 vendor-advisory
- 1037919 vdb-entry
- 96480 vdb-entry
- https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/
- [oss-security] 20190714 Fwd: [ANNOUNCE] libICE 1.0.10 mailing-list
- [debian-lts-announce] 20191123 [SECURITY] [DLA 2002-1] libice security update mailing-list