CVE-2017-18595

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-09-04 · updated 2026-06-17
Weakness: CWE-415

Description

An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c.

Affected products

Linux kernel: from 3.10 before 3.16.55; from 3.17 before 3.18.91; from 3.19 before 4.1.50; from 4.2 before 4.4.109; from 4.5 before 4.9.74; from 4.10 before 4.14.11 — fixed in 3.16.55, 3.18.91, 4.1.50, 4.14.11, 4.4.109, 4.9.74
openSUSE Leap: 15.0, 15.1

How to fix

Upgrade to a fixed version: Linux kernel 3.16.55, 3.18.91, 4.1.50, 4.14.11. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4397f04575c44e1440ec2e49b6302785c95fd2f8
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4397f04575c44e1440ec2e49b6302785c95fd2f8

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