Description
In change_port_settings in drivers/usb/serial/io_ti.c in the Linux kernel before 4.11.3, local users could cause a denial of service by division-by-zero in the serial device layer by trying to set very high baud rates.
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 | 4.9.30-1 | — |
| Debian 13 | linux | 4.9.30-1 | — |
| Debian 12 | linux | 4.9.30-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-83.106 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1022.31 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1002.5 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-32.35~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1061.69 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1063.68 | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-168.218 | USN-3933-1 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-83.106~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-957.rt56.910.el7 | RHSA-2018:3096 |
| RHEL 7 | perf +18 | 3.10.0-957.el7 | RHSA-2018:3083 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.87.1 | SUSE-SU-2019:13979-1 |
| SLES 11 SP4 | ocfs2 | 1.6-0.28.7.1 | SUSE-SU-2019:13979-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.87.1 | SUSE-SU-2019:13979-1 |
| SLE Real Time 11 SP4 | ocfs2 | 1.6-0.28.7.1 | SUSE-SU-2019:13979-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.27.1.el7uek | ELSA-2019-4642 |
Advisories 5
- RHSA-2018:3083 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3096 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- USN-3933-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2019:13979-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2019-4642 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 15, 2019
References
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
- https://bugzilla.suse.com/show_bug.cgi?id=1123706
- 106802 vdb-entry
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6aeb75e6adfaed16e58780309613a578fe1ee90b
- https://github.com/torvalds/linux/commit/6aeb75e6adfaed16e58780309613a578fe1ee90b
- USN-3933-2 vendor-advisory
- USN-3933-1 vendor-advisory