Description
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (memory consumption) via a large crontab file because an unlimited number of lines is accepted.
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 | cron | 3.0pl1-133 | — |
| Debian 13 | cron | 3.0pl1-133 | — |
| Debian 12 | cron | 3.0pl1-133 | — |
| Debian 9 | cron | 3.0pl1-128+deb9u2 | DLA-2801-1 |
| Debian 8 | cron | 3.0pl1-127+deb8u2 | DLA-1723-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | cron | 3.0pl1-128.1ubuntu1.1 | USN-5259-2 |
| Ubuntu 14.04 LTS | cron | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | cron | 3.0pl1-128ubuntu2+esm1 | USN-5259-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | cronie | 1.5.1-6.7.1 | SUSE-SU-2019:1389-2 |
| SLES 15 | cronie | 1.5.1-6.7.1 | SUSE-SU-2019:1389-1 |
| SLES 12 SP4 | cronie | 1.4.11-59.10.1 | SUSE-SU-2019:1990-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | cronie | 1.4.11-59.10.1 | SUSE-SU-2019:1990-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | cronie | 1.5.1-lp151.4.3.1 | openSUSE-SU-2019:1520-1 |
| openSUSE Leap 15.0 | cronie | 1.5.1-lp151.4.3.1 | openSUSE-SU-2019:1520-1 |
Advisories 8
- USN-5259-1 cron vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-5259-2 cron vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-2801-1 cron - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1723-1 cron - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:1389-2 Security update for cronie SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1389-1 Security update for cronie SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1990-1 Security update for cronie SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1520-1 Security update for cronie SUSE / openSUSE Security Updates · Feb 4, 2026