kernel: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c allows for a DoS
Published Nov 18, 2019
4.7
MEDIUMCVSS 3.1
EPSS 0.49%
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).
Affected products
No data.
Configuration 1
- < 5.3.9
Configuration 2
- 16.04
- 18.04
- 19.04
- 19.10
- 15.1
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-193.el8
Fixed · RHSA-2020:1769
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-193.rt13.51.el8
Fixed · RHSA-2020:1567
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Fix deferred
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Fix deferred
Red Hat Enterprise MRG 2
kernel-rt
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-193.el8 | Fixed | RHSA-2020:1769 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-193.rt13.51.el8 | Fixed | RHSA-2020:1567 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Fix deferred | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (system-wide out-of-memory condition).
Red Hat mitigation
In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module hfi1. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed May 28, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.49% (0.00491) | 40.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00491) | 38.12th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00051) | 13.06th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00074) | 34.11th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.04% (0.00045) | 14.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.09% (0.03090) | 64.78th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.63% (0.08626) | 85.56th | v1 |
| Jan 6, 2022 | 8.63% (0.08626) | 85.39th | v1 |
| Sep 1, 2021 | 2.06% (0.02061) | 76.87th | v1 |
| Apr 14, 2021 | 2.06% (0.02061) | 0.00th | v1 |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-19065 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1775000 Issue Tracking
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 x_refsource_MISCRelease NotesVendor Advisory
- https://github.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-19065
- https://security.netapp.com/advisory/ntap-20191205-0001/ x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/4208-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4210-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4226-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19065
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html | vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2019-19065 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1775000 | Issue Tracking | |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 | x_refsource_MISCRelease NotesVendor Advisory | |
| https://github.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6 | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-19065 | ||
| https://security.netapp.com/advisory/ntap-20191205-0001/ | x_refsource_CONFIRMThird Party Advisory | |
| https://usn.ubuntu.com/4208-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/4210-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/4226-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-19065 |
Change history (0)
No recorded changes yet.