# CVE-2019-9893: libseccomp: The libseccomp library provides an interface to the Linux Kernel's syscall filtering mechanism, seccomp

CVE-2019-9893 is fixed in 4 products on 1 platform, first by libseccomp2 2.4.1-0ubuntu0.18.04.2, released March 20, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-9893
- Priority: High
- CVSS: 9.8 (Moderate)
- EPSS: 0.0304
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 20, 2019

## Description

The libseccomp library provides an interface to the Linux Kernel's syscall filtering mechanism, seccomp. The libseccomp API allows an application to specify which system calls or system call arguments the application is allowed to execute, all of which are then enforced by the Linux Kernel.  The following packages have been upgraded to a later upstream version: libseccomp (2.4.1). (BZ#1688938)  Security Fix(es):  * libseccomp: incorrect generation of syscall filters in libseccomp (CVE-2019-9893)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libseccomp RHEL 8 | 0:2.4.1-1.el8 | [RHSA-2019:3624](https://patchblox.com/security/data/fix/linux/rhsa-2019-3624.md) | Nov 5, 2019 |
| Linux | libseccomp ol 8 | 0:2.4.1-1.el8 | [ELSA-2019-3624](https://patchblox.com/security/data/fix/linux/elsa-2019-3624.md) | Nov 14, 2019 |
| Linux | libseccomp-devel RHEL 8 | 0:2.4.1-1.el8 | [RHSA-2019:3624](https://patchblox.com/security/data/fix/linux/rhsa-2019-3624.md) | Nov 5, 2019 |
| Linux | libseccomp-devel ol 8 | 0:2.4.1-1.el8 | [ELSA-2019-3624](https://patchblox.com/security/data/fix/linux/elsa-2019-3624.md) | Nov 14, 2019 |
| Linux | libseccomp2 Ubuntu 18.04.6 LTS (bionic) | 2.4.1-0ubuntu0.18.04.2 | [libseccomp2 2.4.1-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libseccomp2-2.4.1-0ubuntu0.18.04.2.md) | Mar 20, 2019 |
| Linux | seccomp Ubuntu 18.04.6 LTS (bionic) | 2.4.1-0ubuntu0.18.04.2 | [seccomp 2.4.1-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-seccomp-2.4.1-0ubuntu0.18.04.2.md) | Mar 20, 2019 |

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