The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal st
The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.
- BDU:2021-02305
- DLA-2385-1
- DLA-2420-1
- openSUSE-SU-2020:1153-1
- openSUSE-SU-2020:1236-1
- RHSA-2020:4279
- RHSA-2020:5418
- RHSA-2020:5428
- RHSA-2020:5473
- RHSA-2020:5506
- RHSA-2021:0184
- SUSE-SU-2020:2485-1
- SUSE-SU-2020:2486-1
- SUSE-SU-2020:2540-1
- SUSE-SU-2020:2541-1
- SUSE-SU-2020:2574-1
- SUSE-SU-2020:2575-1
- SUSE-SU-2020:2576-1
- SUSE-SU-2020:2582-1
- SUSE-SU-2020:2605-1
- Published
- Jul 30, 2020
- Updated
- Jun 16, 2026
- EPSS
- 5.3% · 92th percentile
- CWE
- CWE-330
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Report tools
Action score
16
Monitor
Low priority for now.
- CVSS
- 14 / 40 · 3.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 5.3%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| netapp | active iq unified manager | cpe:2.3:a:netapp:active_iq_unified_manager |
| netapp | cloud volumes ontap mediator | cpe:2.3:a:netapp:cloud_volumes_ontap_mediator |
| netapp | e-series santricity os controller | cpe:2.3:a:netapp:e-series_santricity_os_controller |
| netapp | hci bootstrap os | cpe:2.3:a:netapp:hci_bootstrap_os |
| netapp | hci management node | cpe:2.3:a:netapp:hci_management_node |
| netapp | solidfire | cpe:2.3:a:netapp:solidfire |
| netapp | steelstore cloud integrated storage | cpe:2.3:a:netapp:steelstore_cloud_integrated_storage |
and 4 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- canonical ubuntu linux20.04
- debian debian linux9.0
- fedoraproject fedora31
- fedoraproject fedora32
- linux linux kernelup to 5.7.11 inclusive
- netapp active iq unified manager9.5 and later
- netapp cloud volumes ontap mediatorall versions
- netapp e-series santricity os controller11.0.0 and later · up to 11.60.3 inclusive
- netapp h410c firmwareall versions
- netapp hci bootstrap osall versions
- netapp hci management nodeall versions
- netapp solidfireall versions
- netapp steelstore cloud integrated storageall versions
- netapp storagegridup to 9.0.4 inclusive
- opensuse leap15.1
- opensuse leap15.2
- oracle sd-wan edge8.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 5.7.17-1 | 5.7.17-1 |
| Debian:9 | linux | before 4.9.240-1 | 4.9.240-1 |
| Debian:9 | linux-4.19 | before 4.19.146-1~deb9u1 | 4.19.146-1~deb9u1 |
| openSUSE:Leap 15.1 | kernel-debug | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-default | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-docs | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-kvmsmall | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-obs-build | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-obs-qa | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-source | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-syms | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-vanilla | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.2 | bbswitch | before 0.8-lp152.6.2.1 | 0.8-lp152.6.2.1 |
| openSUSE:Leap 15.2 | crash | before 7.2.8-lp152.3.2.1 | 7.2.8-lp152.3.2.1 |
| openSUSE:Leap 15.2 | dpdk | before 19.11.1-lp152.2.5.1 | 19.11.1-lp152.2.5.1 |
| openSUSE:Leap 15.2 | drbd | before 9.0.22~1+git.fe2b5983-lp152.2.2.1 | 9.0.22~1+git.fe2b5983-lp152.2.2.1 |
| openSUSE:Leap 15.2 | hdjmod | before 1.28-lp152.6.2.1 | 1.28-lp152.6.2.1 |
| openSUSE:Leap 15.2 | kernel-debug | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-default | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-docs | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-kvmsmall | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-obs-build | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-obs-qa | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-preempt | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 5.7.17-1 · Debian:12 | Package registry (OSV) |
| debian:linux-4.19 | 4.19.146-1~deb9u1 · Debian:9 | Package registry (OSV) |
| opensuse:bbswitch | 0.8-lp152.6.2.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:crash | 7.2.8-lp152.3.2.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:dpdk | 19.11.1-lp152.2.5.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-docs | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-build | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-source | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-syms | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-vanilla | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| red hat:kernel | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-alt | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-bootwrapper | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo-common-ppc64le | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-devel | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-doc | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-tools | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-tools-debuginfo | 0:4.14.0-115.32.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:kernel-azure | 5.3.18-18.15.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | Package registry (OSV) |
| suse:kernel-default | 5.3.18-24.12.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-24.12.1.9.4.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2 | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-24.12.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP2 | Package registry (OSV) |
+8
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-21-0331 · Apr 21, 2021(Oracle Güvenlik Uyarısı Yayınladı)
- TR-21-0311 · Apr 14, 2021(IBM Güvenlik Bülteni Yayınladı)
- TR-20-868 · Oct 20, 2020(Linux Kernel Güvenlik Güncellemesi)
- TR-20-771 · Sep 22, 2020(Linux Kernel Güvenlik Güncellemesi)
- TR-20-720 · Sep 15, 2020(Linux Kernel Güvenlik Güncellemesi)
- TR-20-567 · Aug 4, 2020(Linux Kernel Güvenlik Güncellemesi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-330 · Use of Insufficiently Random ValuesCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- arxiv.org/pdf/2012.07432.pdf
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638
- github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4CN2W75R2YW/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLAXJ4MERQNW/
- security.netapp.com/advisory/ntap-20200814-0004/
- usn.ubuntu.com/4525-1/
- usn.ubuntu.com/4526-1/
- www.oracle.com/security-alerts/cpuApr2021.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.