Resource Exhaustion Affecting kernel-debug package, versions <0:4.18.0-193.el8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUG-3702551
- published 26 Jul 2021
- disclosed 21 Nov 2019
Introduced: 21 Nov 2019
CVE-2019-19065 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug to version 0:4.18.0-193.el8 or higher.
This issue was patched in RHSA-2020:1769.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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).
References
- https://security.netapp.com/advisory/ntap-20191205-0001/
- https://access.redhat.com/security/cve/CVE-2019-19065
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
- https://github.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6
- https://access.redhat.com/errata/RHSA-2020:1769
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
- https://usn.ubuntu.com/4208-1/
- https://usn.ubuntu.com/4210-1/
- https://usn.ubuntu.com/4226-1/