CVE-2019-19462

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Summary

CVECVE-2019-19462
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-11-30 01:15:10 UTC
Updated2026-10-08 21:17:19 UTC
Descriptionrelay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.004600000 probability, percentile 0.379880000 (date 2026-10-10)

Problem Types: CWE-476 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 20.04 All All All
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Linux Linux Kernel All All All All
Application Netapp Active Iq Unified Manager All All All All
Hardware Netapp Hci Compute Node - All All All
Application Netapp Hci Management Node - All All All
Hardware Netapp Hci Storage Node - All All All
Application Netapp Solidfire - All All All
Operating System Opensuse Leap 15.1 All All All
Operating System Opensuse Leap 15.2 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-4698-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[security-announce] openSUSE-SU-2020:0935-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
general protection fault in relay_close_buf af854a3a-2127-422b-91ae-364da2661108 syzkaller.appspot.com Third Party Advisory
Debian -- Security Information -- DSA-4699-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
USN-4425-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
[PATCH] relay: handle alloc_percpu returning NULL in relay_open - Daniel Axtens af854a3a-2127-422b-91ae-364da2661108 lore.kernel.org
general protection fault in relay_open af854a3a-2127-422b-91ae-364da2661108 syzkaller.appspot.com Third Party Advisory
USN-4439-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
CVE-2019-19462 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
[SECURITY] [DLA 2242-1] linux-4.9 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
BUG: unable to handle kernel paging request in relay_destroy_buf af854a3a-2127-422b-91ae-364da2661108 syzkaller-ppc64.appspot.com Patch, Third Party Advisory
[security-announce] openSUSE-SU-2020:0801-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
BUG: Unable to handle kernel data access at ADDR af854a3a-2127-422b-91ae-364da2661108 syzkaller-ppc64.appspot.com Patch, Third Party Advisory
USN-4414-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
USN-4440-1: linux kernel vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
[PATCH] relay: handle alloc_percpu returning NULL in relay_open - Daniel Axtens MITRE lore.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 352300 Amazon Linux Security Advisory for kernel: ALAC2012-2020-020
  • 353139 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-012
  • 377038 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2020:0198)
  • 750376 OpenSUSE Security Update for RT kernel (openSUSE-SU-2021:0242-1)

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