Description
Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.
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 | linux | 4.3.3-6 | — |
| Debian 13 | linux | 4.3.3-6 | — |
| Debian 12 | linux | 4.3.3-6 | — |
| Debian 8 | linux | 3.16.7-ckt20-1+deb8u3 | DSA-3448-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze19 | DLA-412-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-83.127 | USN-2929-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-69.89~14.04.1 | USN-2948-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-56.62~14.04.1 | USN-2932-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-34.39~14.04.1 | USN-2930-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-docs +1 | 3.12.53-60.30.2 | SUSE-SU-2016:0585-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.53-60.30.1 | SUSE-SU-2016:0585-1 |
| SLES 12 SP1 | lttng-modules | 2.7.0-3.1 | SUSE-SU-2016:0585-1 |
| SLES 12 | kernel-docs +1 | 3.12.55-52.42.2 | SUSE-SU-2016:0785-1 |
| SLES 12 | kernel-ec2 | 3.12.53-60.30.1 | SUSE-SU-2016:0785-1, SUSE-SU-2016:0585-1 |
| SLES 12 | kernel-xen +3 | 3.12.55-52.42.1 | SUSE-SU-2016:0785-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-71.2 | SUSE-SU-2016:0911-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-71.1 | SUSE-SU-2016:0911-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.40.1 | SUSE-SU-2016:2074-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.53-60.30.1 | SUSE-SU-2016:0585-1 |
| SLES for SAP 12 SP1 | lttng-modules | 2.7.0-3.1 | SUSE-SU-2016:0585-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.55-52.42.1 | SUSE-SU-2016:0785-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-71.1 | SUSE-SU-2016:0911-1 |
| SLE Real Time 12 SP1 | kernel-rt +5 | 3.12.58-14.1 | SUSE-SU-2016:1764-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-51.1 | SUSE-SU-2016:1102-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_12 +1 | 1-2.1 | SUSE-SU-2016:0785-1, SUSE-SU-2016:0585-1 |
| SUSE OpenStack Cloud 5 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SUSE Manager Proxy 2.1 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SUSE Manager 2.1 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.6.el6uek | 0.5.3-2.el6 | ELSA-2016-3596 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.6.el7uek | 0.5.3-2.el7 | ELSA-2016-3596 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-61.1.6.el7uek | ELSA-2016-3596 |
Advisories 17
- USN-2929-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-412-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3448-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2948-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2930-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2932-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:0585-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1764-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0911-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2074-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1203-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1102-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1426 Google Android: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 30, 2025
- SUSE-SU-2016:0785-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-0153 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 17, 2024
- ELSA-2016-3596 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 26, 2016
References
- https://security-tracker.debian.org/tracker/CVE-2016-0723
- USN-2930-1 vendor-advisory
- USN-2967-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1296253
- USN-2930-2 vendor-advisory
- DSA-3503 vendor-advisory
- USN-2967-2 vendor-advisory
- SUSE-SU-2016:1764 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c17c861a357e9458001f021a7afa7aab9937439
- USN-2930-3 vendor-advisory
- SUSE-SU-2016:1102 vendor-advisory
- http://source.android.com/security/bulletin/2016-07-01.html
- USN-2929-1 vendor-advisory
- USN-2932-1 vendor-advisory
- 82950 vdb-entry
- FEDORA-2016-5d43766e33 vendor-advisory
- SUSE-SU-2016:2074 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- 1035695 vdb-entry
- USN-2948-1 vendor-advisory
- DSA-3448 vendor-advisory
- openSUSE-SU-2016:1008 vendor-advisory
- USN-2929-2 vendor-advisory
- https://github.com/torvalds/linux/commit/5c17c861a357e9458001f021a7afa7aab9937439
- USN-2948-2 vendor-advisory
- FEDORA-2016-2f25d12c51 vendor-advisory
- SUSE-SU-2016:0911 vendor-advisory
- https://support.f5.com/csp/article/K43650115