What’s Vulnerable › Vulnerabilities

CVE-2019-11599

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-29 · updated 2026-06-17
• Weakness: CWE-667

Description

The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c.

Affected products

• Linux kernel: from 2.16.12 before 3.16.66; from 3.17 before 4.4.183; from 4.5 before 4.9.188; from 4.10 before 4.14.114; from 4.15 before 4.19.37; from 4.20 before 5.0.10 — fixed in 3.16.66, 4.14.114, 4.19.37, 4.4.183, 4.9.188, 5.0.10

How to fix

Upgrade to a fixed version: Linux kernel 3.16.66, 4.14.114, 4.19.37, 4.4.183. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
• http://packetstormsecurity.com/files/152663/Linux-Missing-Lockdown.html
• http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
• http://www.openwall.com/lists/oss-security/2019/04/29/1
• http://www.openwall.com/lists/oss-security/2019/04/29/2
• http://www.openwall.com/lists/oss-security/2019/04/30/1
• http://www.securityfocus.com/bid/108113
• https://access.redhat.com/errata/RHSA-2019:2029
• https://access.redhat.com/errata/RHSA-2019:2043
• https://access.redhat.com/errata/RHSA-2019:3309
• https://access.redhat.com/errata/RHSA-2019:3517

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