What’s Vulnerable › Vulnerabilities

CVE-2020-10732

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-12 · updated 2026-06-17
• Weakness: CWE-908

Description

A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 20.04
• Linux kernel: before 3.16.85; from 4.4 before 4.4.226; from 4.9 before 4.9.226; from 4.14 before 4.14.183; from 4.19 before 4.19.126; from 5.4 before 5.4.44 — fixed in 3.16.85, 4.14.183, 4.19.126, 4.4.226, 4.9.226, 5.4.44
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: from 9.5
• NetApp Aff 8300 Firmware: all versions
• NetApp Aff 8700 Firmware: all versions
• NetApp Aff A400 Firmware: all versions
• NetApp Aff A700 Firmware: all versions
• NetApp H300E Firmware: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500E Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700E Firmware: all versions
• NetApp H700S Firmware: all versions
• NetApp Hci Management Node: all versions
• NetApp Solidfire: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions
• openSUSE Leap: 15.1, 15.2

How to fix

Upgrade to a fixed version: Linux kernel 3.16.85, 4.14.183, 4.19.126, 4.4.226. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10732
• https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=aca969cacf07f41070d788ce2b8ca71f09d5207d
• https://github.com/google/kmsan/issues/76
• https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0a
• https://lore.kernel.org/lkml/CAG_fn=VZZ7yUxtOGzuTLkr7wmfXWtKK9BHHYawj=rt9XWnCYvg%40mail.gmail.com/
• https://security.netapp.com/advisory/ntap-20210129-0005/
• https://twitter.com/grsecurity/status/1252558055629299712
• https://usn.ubuntu.com/4411-1/
• https://usn.ubuntu.com/4427-1/
• https://usn.ubuntu.com/4439-1/

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