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Vulnerability record · CVE-2019-19462 · published 30 November 2019

CVE-2019-19462: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

relay_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.

5.5 CVSS 3.1 Medium EPSS 0.46% · top 62.6% CWE-476 · NULL pointer dereference
5.5CVSS 3.1 base score, v2 4.9
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

relay_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.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing ListThird Party Advisory
https://lore.kernel.org/lkml/20191129013745.7168-1-dja%40axtens.net/
https://security.netapp.com/advisory/ntap-20210129-0004/ Third Party Advisory
https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 PatchThird Party Advisory
https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 PatchThird Party Advisory
https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 Third Party Advisory
https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b Third Party Advisory
https://usn.ubuntu.com/4414-1/ Third Party Advisory
https://usn.ubuntu.com/4425-1/ Third Party Advisory
https://usn.ubuntu.com/4439-1/ Third Party Advisory
https://usn.ubuntu.com/4440-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
https://www.debian.org/security/2020/dsa-4699 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing ListThird Party Advisory
https://lore.kernel.org/lkml/20191129013745.7168-1-dja%40axtens.net/
https://security.netapp.com/advisory/ntap-20210129-0004/ Third Party Advisory
https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 PatchThird Party Advisory
https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 PatchThird Party Advisory
https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 Third Party Advisory
https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b Third Party Advisory
https://usn.ubuntu.com/4414-1/ Third Party Advisory
https://usn.ubuntu.com/4425-1/ Third Party Advisory
https://usn.ubuntu.com/4439-1/ Third Party Advisory
https://usn.ubuntu.com/4440-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
https://www.debian.org/security/2020/dsa-4699 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-19462), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.