Description
In the Linux kernel before 4.1.4, a buffer overflow occurs when checking userspace params in drivers/media/dvb-frontends/cx24116.c. The maximum size for a DiSEqC command is 6, according to the userspace API. However, the code allows larger values such as 23.
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 | 4.1.5-1 | — |
| Debian 13 | linux | 4.1.5-1 | — |
| Debian 12 | linux | 4.1.5-1 | — |
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 14.04 LTS | linux | 3.13.0-62.102 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-1127.rt56.1093.el7 | RHSA-2020:1070 |
| RHEL 7 | perf +18 | 3.10.0-1127.el7 | RHSA-2020:1016 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.101.1 | SUSE-SU-2019:14157-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.39.1.el6uek | 0.4.5-3.el6 | ELSA-2019-4810 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.39.1.el7uek | 0.4.5-3.el7 | ELSA-2019-4810 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.39.1.el7uek | ELSA-2019-4810 |
| Oracle Linux 7 | perf +12 | 3.10.0-1127.el7 | ELSA-2020-1016 |
Advisories 5
- RHSA-2020:1070 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:1016 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- SUSE-SU-2019:14157-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2020-1016 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020
- ELSA-2019-4810 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 2, 2019