CVE-2019-19462
Mediumrelay_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 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-476CVE-2019-19462 is a NULL Pointer Dereference vulnerability
What is NULL Pointer Dereference?
The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE
References
The following references provide additional information about CVE-2019-19462 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Mailing List Third Party Advisory
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Mailing List Third Party Advisory
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Mailing List Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4414-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4425-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4439-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4440-1/Third Party Advisory
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Debian Securityhttps://www.debian.org/security/2020/dsa-4698Third Party Advisory
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Debian Securityhttps://www.debian.org/security/2020/dsa-4699Third Party Advisory
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PatchKernel patch commithttps://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8
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PatchKernel patch commithttps://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531
Frequently asked questions
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What is CVE-2019-19462?
CVE-2019-19462 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2019-19462 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2019-19462?
CVE-2019-19462 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2019-19462?
No patch is currently available for CVE-2019-19462. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2019-19462 actively exploited?
No — CVE-2019-19462 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
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What is NULL Pointer Dereference (CWE-476)?
The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →