kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS
Published Nov 18, 2019
4.7
MEDIUMCVSS 3.1
EPSS 0.63%
Description
A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures, aka CID-ffdde5932042.
Affected products
No data.
Configuration 1
- ≤ 5.3.11
Configuration 2
- 14.04
- 16.04
- 18.04
- 19.10
- 8.0
- 30
- 31
- 15.1
- 7.0
- 8.0
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1160.el7
Fixed · RHSA-2020:4060
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.26.1.el7a
Fixed · RHSA-2020:2854
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1160.rt56.1131.el7
Fixed · RHSA-2020:4062
Red Hat Enterprise Linux 8
kernel-0:4.18.0-240.el8
Fixed · RHSA-2020:4431
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-240.rt7.54.el8
Fixed · RHSA-2020:4609
Red Hat Enterprise Linux 5
kernel
Out of support scope
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise MRG 2
kernel-rt
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1160.el7 | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.26.1.el7a | Fixed | RHSA-2020:2854 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1160.rt56.1131.el7 | Fixed | RHSA-2020:4062 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-240.el8 | Fixed | RHSA-2020:4431 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-240.rt7.54.el8 | Fixed | RHSA-2020:4609 |
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | 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 error cleanup code path.
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 crypto_user. 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.
No CISA SSVC assessment for this CVE yet.
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 | 0.63% (0.00633) | 48.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00633) | 45.40th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00079) | 21.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00077) | 34.95th | v3 (v2023.03.01) |
| May 7, 2024 | 0.05% (0.00046) | 16.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00046) | 14.08th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.84% (0.05839) | 77.39th | v2 (v2022.01.01) |
| Feb 3, 2022 | 15.95% (0.15948) | 90.18th | v1 |
| Jan 6, 2022 | 15.95% (0.15948) | 90.06th | v1 |
| Sep 1, 2021 | 4.06% (0.04057) | 83.25th | v1 |
| Apr 14, 2021 | 4.06% (0.04057) | 0.00th | v1 |
References (19)
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html x_refsource_MISCThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2019-19062 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1775021 Issue Tracking
- https://github.com/torvalds/linux/commit/ffdde5932042600c6807d46c1550b28b0db6a3bc x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-19062
- https://seclists.org/bugtraq/2020/Jan/10 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20191205-0001/ x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/4254-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4254-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4258-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4284-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4287-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4287-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19062
Change history (0)
No recorded changes yet.