Updated: 2023-12-06
CWE: Improper Initialization
Description:
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
CVSS3: 4.5
| OS | Vendor version | Errata |
|---|---|---|
| Ubuntu 18.04 | 4.15.0-129.132 | USN-4680-1 |
| Ubuntu 16.04 | 4.4.0-198.230 | USN-4681-1 |
| Ubuntu 18.04 AWS | 4.15.0-1091.96 | USN-4680-1 |
| Ubuntu 16.04 AWS | 4.4.0-1119.133 | USN-4681-1 |
| Ubuntu 16.04 HWE | 4.15.0-129.132~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 AWS HWE | 4.15.0-1091.96~16.04.1 | USN-4680-1 |
| Debian 9 | 4.9.246-1 | DLA-2494-1 |
| Oracle Linux 6 UEK 4 | 4.1.12-124.50.2.el6uek | ELSA-2021-9215 |
| Oracle Linux 7 UEK 4 | 4.1.12-124.50.2.el7uek | ELSA-2021-9215 |
| Ubuntu 18.04 HWE Focal | 5.4.0-59.65~18.04.1 | USN-4679-1 |
| Ubuntu 16.04 GCP | 4.15.0-1091.104~16.04.1 | USN-4680-1 |
| RHEL 8 | 4.18.0-305.el8 | RHSA-2021:1578 |
| Ubuntu 16.04 Azure | 4.15.0-1103.114~16.04.1 | USN-4680-1 |
| CentOS 8 | 4.18.0-305.el8 | CESA-2021:1578 |
| Oracle Linux 8 | 4.18.0-305.el8 | ELSA-2021-1578 |
| Ubuntu 20.04 | 5.4.0-59.65 | USN-4679-1 |
| Ubuntu 18.04 AWS Focal | 5.4.0-1034.35~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 Azure Focal | 5.4.0-1035.36~18.04.1 | USN-4679-1 |
| Ubuntu 20.04 AWS | 5.4.0-1034.35 | USN-4679-1 |
| AlmaLinux 8 | 4.18.0-305.el8 | ALSA-2021:1578 |
| Ubuntu 20.04 HWE | 5.8.0-44.50~20.04.1 | USN-4751-1 |
| Ubuntu 16.04 HWE ESM | 4.15.0-129.132~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 AWS ESM | 4.4.0-1119.133 | USN-4681-1 |
| Ubuntu 16.04 GCP ESM | 4.15.0-1091.104~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 AWS HWE ESM | 4.15.0-1091.96~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 Azure ESM | 4.15.0-1103.114~16.04.1 | USN-4680-1 |
| OS | Original kernel version | State |
|---|---|---|
| Ubuntu 18.04 | |
Ready For Release |
| Ubuntu 16.04 | |
Ready For Release |
| Ubuntu 18.04 AWS | |
Ready For Release |
| Ubuntu 16.04 AWS | |
Ready For Release |
| Ubuntu 16.04 HWE | |
Ready For Release |
| Ubuntu 16.04 AWS HWE | |
Ready For Release |
| Debian 9 | |
Will Not Fix |
| Oracle Linux 6 UEK 4 |
4.1.12-124.46.4.1.el6uek
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4.1.12-124.36.4.el6uek
4.1.12-124.23.2.el6uek
4.1.12-124.14.1.el6uek
4.1.12-124.40.6.el6uek
4.1.12-124.21.1.el6uek
4.1.12-124.29.3.el6uek
4.1.12-124.32.3.el6uek
4.1.12-124.36.1.el6uek
4.1.12-124.25.1.el6uek
4.1.12-124.45.2.el6uek
4.1.12-124.48.5.el6uek
4.1.12-124.42.3.el6uek
4.1.12-124.41.4.el6uek
4.1.12-124.33.4.el6uek
4.1.12-124.44.4.el6uek
4.1.12-124.32.1.el6uek
4.1.12-124.39.5.el6uek
4.1.12-124.27.1.el6uek
4.1.12-124.15.2.el6uek
4.1.12-124.18.5.el6uek
4.1.12-124.47.3.el6uek
4.1.12-112.16.7.el6uek
4.1.12-124.14.5.el6uek
4.1.12-124.19.1.el6uek
4.1.12-94.3.5.el6uek
4.1.12-124.29.3.1.el6uek
4.1.12-124.17.1.el6uek
4.1.12-124.34.1.el6uek
4.1.12-124.39.1.el6uek
4.1.12-124.35.1.el6uek
4.1.12-103.9.4.el6uek
4.1.12-124.20.7.el6uek
4.1.12-124.38.1.el6uek
4.1.12-124.16.2.el6uek
4.1.12-112.16.4.el6uek
4.1.12-124.16.1.el6uek
4.1.12-124.16.3.el6uek
4.1.12-124.18.1.el6uek
4.1.12-124.31.1.el6uek
4.1.12-124.32.3.2.el6uek
4.1.12-124.35.2.el6uek
4.1.12-124.35.4.el6uek
4.1.12-124.39.2.el6uek
4.1.12-61.47.1.el6uek
4.1.12-124.27.2.el6uek
4.1.12-124.43.4.el6uek
4.1.12-124.18.9.el6uek
4.1.12-124.15.1.el6uek
4.1.12-124.19.2.el6uek
4.1.12-124.26.10.el6uek
4.1.12-124.28.1.el6uek
4.1.12-124.15.4.el6uek
4.1.12-124.28.6.el6uek
4.1.12-124.45.6.el6uek
4.1.12-124.28.3.el6uek
4.1.12-112.14.13.el6uek
4.1.12-124.14.2.el6uek
4.1.12-124.16.4.el6uek
4.1.12-124.36.3.el6uek
4.1.12-124.30.1.el6uek
4.1.12-124.46.3.el6uek
4.1.12-124.26.12.el6uek
4.1.12-124.20.1.el6uek
4.1.12-112.14.15.el6uek
4.1.12-112.17.3.el6uek
4.1.12-124.14.3.el6uek
4.1.12-124.17.2.el6uek
4.1.12-124.20.3.el6uek
4.1.12-124.22.2.el6uek
4.1.12-124.28.5.el6uek
4.1.12-124.29.4.1.el6uek
4.1.12-124.31.1.1.el6uek
4.1.12-124.36.1.1.el6uek
4.1.12-124.37.1.el6uek
4.1.12-124.39.2.1.el6uek
4.1.12-124.39.5.1.el6uek
4.1.12-124.40.6.2.el6uek
4.1.12-124.40.6.3.el6uek
4.1.12-124.41.5.el6uek
4.1.12-124.42.4.el6uek
4.1.12-124.44.4.1.el6uek
4.1.12-124.48.2.el6uek
4.1.12-124.48.3.1.el6uek
4.1.12-124.48.6.el6uek
|
Released |
| Oracle Linux 7 UEK 4 |
4.1.12-124.20.7.el7uek
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4.1.12-124.38.1.el7uek
4.1.12-124.27.1.el7uek
4.1.12-124.25.1.el7uek
4.1.12-124.44.4.el7uek
4.1.12-124.41.4.el7uek
4.1.12-124.26.12.el7uek
4.1.12-124.15.2.el7uek
4.1.12-103.9.4.el7uek
4.1.12-124.28.3.el7uek
4.1.12-124.36.3.el7uek
4.1.12-112.14.13.el7uek
4.1.12-124.15.1.el7uek
4.1.12-124.36.4.el7uek
4.1.12-124.17.1.el7uek
4.1.12-112.16.7.el7uek
4.1.12-124.27.2.el7uek
4.1.12-124.45.6.el7uek
4.1.12-124.28.6.el7uek
4.1.12-124.29.3.el7uek
4.1.12-124.48.5.el7uek
4.1.12-124.14.2.el7uek
4.1.12-124.42.3.el7uek
4.1.12-124.35.1.el7uek
4.1.12-124.39.5.el7uek
4.1.12-124.40.6.el7uek
4.1.12-124.43.4.el7uek
4.1.12-124.32.1.el7uek
4.1.12-124.45.2.el7uek
4.1.12-124.28.1.el7uek
4.1.12-124.15.4.el7uek
4.1.12-124.33.4.el7uek
4.1.12-94.3.5.el7uek
4.1.12-124.46.3.el7uek
4.1.12-124.16.2.el7uek
4.1.12-124.34.1.el7uek
4.1.12-124.36.1.el7uek
4.1.12-124.39.1.el7uek
4.1.12-124.30.1.el7uek
4.1.12-124.14.5.el7uek
4.1.12-124.32.3.el7uek
4.1.12-124.29.3.1.el7uek
4.1.12-124.47.3.el7uek
4.1.12-124.14.1.el7uek
4.1.12-124.26.10.el7uek
4.1.12-124.49.3.1.el7uek
4.1.12-124.23.2.el7uek
4.1.12-124.18.9.el7uek
4.1.12-124.16.4.el7uek
4.1.12-112.14.15.el7uek
4.1.12-112.16.4.el7uek
4.1.12-112.17.3.el7uek
4.1.12-124.16.1.el7uek
4.1.12-124.16.3.el7uek
4.1.12-124.18.1.el7uek
4.1.12-124.20.3.el7uek
4.1.12-124.31.1.el7uek
4.1.12-124.32.3.2.el7uek
4.1.12-124.35.2.el7uek
4.1.12-124.35.4.el7uek
4.1.12-124.36.1.1.el7uek
4.1.12-124.39.2.el7uek
4.1.12-124.39.5.1.el7uek
4.1.12-124.14.3.el7uek
4.1.12-124.17.2.el7uek
4.1.12-124.22.2.el7uek
4.1.12-124.28.5.el7uek
4.1.12-124.29.4.1.el7uek
4.1.12-124.31.1.1.el7uek
4.1.12-124.37.1.el7uek
4.1.12-124.39.2.1.el7uek
4.1.12-124.40.6.3.el7uek
4.1.12-124.41.5.el7uek
4.1.12-124.42.4.el7uek
4.1.12-124.44.4.1.el7uek
4.1.12-124.48.2.el7uek
4.1.12-124.48.3.1.el7uek
4.1.12-124.48.6.el7uek
4.1.12-124.46.4.1.el7uek
|
Released |
| Ubuntu 18.04 HWE Focal | |
Ready For Release |
| Ubuntu 16.04 GCP | |
Will Not Fix |
| RHEL 8 |
4.18.0-240.8.1.el8_3
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4.18.0-240.1.1.el8_3
4.18.0-240.15.1.el8_3
4.18.0-240.10.1.el8_3
4.18.0-240.22.1.el8_3
4.18.0-240.el8
|
Released |
| Debian 10 | |
Will Not Fix |
| Proofpoint | |
Ready For Release |
| Ubuntu 16.04 Azure | |
Will Not Fix |
| CentOS 8 |
4.18.0-240.22.1.el8_3
show all
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4.18.0-240.10.1.el8_3
4.18.0-240.el8
4.18.0-240.15.1.el8_3
4.18.0-240.1.1.el8_3
|
Released |
| Oracle Linux 8 |
4.18.0-240.el8
show all
hide all
4.18.0-240.1.1.el8_3
4.18.0-240.10.1.el8_3
4.18.0-240.8.1.el8_3
4.18.0-240.22.1.el8_3
4.18.0-240.15.1.el8_3
|
Released |
| CloudLinux OS 8 | |
Will Not Fix |
| CloudLinux OS 7h | |
Will Not Fix |
| Ubuntu 20.04 | |
Ready For Release |
| Ubuntu 18.04 AWS Focal | |
Ready For Release |
| Ubuntu 18.04 Azure Focal | |
Will Not Fix |
| Ubuntu 20.04 AWS | |
Ready For Release |
| AlmaLinux 8 |
4.18.0-240.22.1.el8_3
show all
hide all
4.18.0-240.15.1.el8_3
4.18.0-240.el8
|
Released |
| Ubuntu 20.04 HWE |
5.8.0-43.49~20.04.1
show all
hide all
5.8.0-38.43~20.04.1
5.8.0-34.37~20.04.2
5.8.0-29.31~20.04.1
5.8.0-33.36~20.04.1
5.8.0-36.40~20.04.1
5.8.0-40.45~20.04.1
5.8.0-41.46~20.04.1
|
Released |
| Ubuntu 16.04 HWE ESM | |
Will Not Fix |
| Ubuntu 16.04 AWS ESM | |
Will Not Fix |
| Ubuntu 16.04 GCP ESM | |
Will Not Fix |
| Ubuntu 16.04 AWS HWE ESM | |
Will Not Fix |
| Ubuntu 16.04 Azure ESM | |
Will Not Fix |