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CentOS Linux: CVE-2019-19065: Important: kernel-rt security, bug fix, and enhancement update (Multiple Advisories)

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CentOS Linux: CVE-2019-19065: Important: kernel-rt security, bug fix, and enhancement update (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
11/18/2019
Created
05/05/2020
Added
05/04/2020
Modified
11/08/2023

Description

A 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).

Solution(s)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt

References

  • CVE-2019-19065

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