CVE-2019-19065
MediumA memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures, aka CID-34b3be18a04e. NOTE: This has been disputed as not a vulnerability because "rhashtable_init() can only fail if it is passed invalid values in the second parameter's struct, but when invoked from sdma_init() that is a pointer to a static const struct, so an attacker could only trigger failure if they could corrupt kernel memory (in which case a small memory leak is not a significant problem).
CVSS 3.1 score
4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-401CVE-2019-19065 is a Memory Leak vulnerability
What is Memory Leak?
The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE
References
The following references provide additional information about CVE-2019-19065 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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Release Notes Vendor Advisory
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Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4208-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4210-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/4226-1/Third Party Advisory
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PatchKernel patch commithttps://github.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6
Frequently asked questions
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What is CVE-2019-19065?
CVE-2019-19065 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Memory Leak flaw (CWE-401) . CVE-2019-19065 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-2019-19065?
CVE-2019-19065 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2019-19065?
No patch is currently available for CVE-2019-19065. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2019-19065 actively exploited?
No — CVE-2019-19065 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 Memory Leak (CWE-401)?
The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →