What’s Vulnerable › Vulnerabilities

CVE-2019-9893

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-21 · updated 2026-06-17

Description

libseccomp before 2.4.0 did not correctly generate 64-bit syscall argument comparisons using the arithmetic operators (LT, GT, LE, GE), which might able to lead to bypassing seccomp filters and potential privilege escalations.

Affected products

• Libseccomp Project Libseccomp: before 2.4.0 — fixed in 2.4.0

How to fix

Upgrade to a fixed version: Libseccomp Project Libseccomp 2.4.0. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00022.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00027.html
• https://access.redhat.com/errata/RHSA-2019:3624
• https://github.com/seccomp/libseccomp/issues/139
• https://seclists.org/oss-sec/2019/q1/179
• https://security.gentoo.org/glsa/201904-18
• https://usn.ubuntu.com/4001-1/
• https://usn.ubuntu.com/4001-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00022.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00027.html
• https://access.redhat.com/errata/RHSA-2019:3624
• https://github.com/seccomp/libseccomp/issues/139

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