An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packet
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 4.3% (FIRST EPSS); higher than 91% of all records.
- Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: linux (Debian:12) 5.2.6-1; linux (Debian:8) 3.16.72-1; linux-4.9 (Debian:8) 4.9.168-1+deb9u5~deb8u1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to linux (Debian:12) 5.2.6-1; linux (Debian:8) 3.16.72-1; linux-4.9 (Debian:8) 4.9.168-1+deb9u5~deb8u1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.
- BDU:2019-03630
- DLA-1884-1
- DLA-1885-1
- DSA-4497-1
- openSUSE-SU-2021:3876-1
- RHSA-2019:1973
- RHSA-2019:3220
- RHSA-2019:3836
- RHSA-2019:3967
- RHSA-2019:4058
- RHSA-2020:0204
- SUSE-SU-2021:3192-1
- SUSE-SU-2021:3206-1
- SUSE-SU-2021:3217-1
- SUSE-SU-2021:3876-1
- SUSE-SU-2021:3969-1
- SUSE-SU-2021:3972-1
- SUSE-SU-2022:3263-1
- SUSE-SU-2022:3294-1
- SUSE-SU-2023:0416-1
- Published
- Apr 25, 2019
- Updated
- Jun 16, 2026
- EPSS
- 4.3% · 91th percentile
- CWE
- CWE-835
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.3%
CNA vs NVD score
- NVD
- 7.7
- CNA · redhat
- 6.3
- 1.4 point gap
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| 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 for vmware vsphere | cpe:2.3:a:netapp:active_iq_unified_manager_for_vmware_vsphere |
| netapp | hci management node | cpe:2.3:a:netapp:hci_management_node |
| netapp | snapprotect | cpe:2.3:a:netapp:snapprotect |
| netapp | solidfire | cpe:2.3:a:netapp:solidfire |
| netapp | storage replication adapter for clustered data ontap for vmware vsphere | cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere |
| netapp | vasa provider for clustered data ontap | cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap |
| netapp | virtual storage console for vmware vsphere | cpe:2.3:a:netapp:virtual_storage_console_for_vmware_vsphere |
and 3 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- canonical ubuntu linux19.04
- debian debian linux10.0
- debian debian linux8.0
- debian debian linux9.0
- fedoraproject fedora28
- fedoraproject fedora29
- fedoraproject fedora30
- linux linux kernel2.6.34 and later · before 3.16.72
- linux linux kernel4.20 and later · before 5.2
- linux linux kernel4.15 and later · before 4.19.64
- linux linux kernel4.10 and later · before 4.14.133
- linux linux kernel4.5 and later · before 4.9.190
- linux linux kernel3.17 and later · before 4.4.191
- netapp active iq unified manager for vmware vsphere9.5 and later
- netapp cn1610 firmwareall versions
- netapp hci management nodeall versions
- netapp snapprotectall versions
- netapp solidfireall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
Red Hat Kernel
- affects up to and including v5.1-rc6affected
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 5.2.6-1 | 5.2.6-1 |
| Debian:8 | linux | before 3.16.72-1 | 3.16.72-1 |
| Debian:8 | linux-4.9 | before 4.9.168-1+deb9u5~deb8u1 | 4.9.168-1+deb9u5~deb8u1 |
| Debian:9 | linux | before 4.9.168-1+deb9u5 | 4.9.168-1+deb9u5 |
| openSUSE:Leap 15.3 | kernel-debug | before 4.12.14-197.102.2 | 4.12.14-197.102.2 |
| openSUSE:Leap 15.3 | kernel-default | before 4.12.14-197.102.2 | 4.12.14-197.102.2 |
| openSUSE:Leap 15.3 | kernel-kvmsmall | before 4.12.14-197.102.2 | 4.12.14-197.102.2 |
| openSUSE:Leap 15.3 | kernel-vanilla | before 4.12.14-197.102.2 | 4.12.14-197.102.2 |
| openSUSE:Leap 15.3 | kernel-zfcpdump | before 4.12.14-197.102.2 | 4.12.14-197.102.2 |
| Red Hat:enterprise_linux:6::client | kernel | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-abi-whitelists | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-debuginfo | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-devel | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-i686 | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-x86_64 | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-devel | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-doc | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | kernel-firmware | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | perf | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | perf-debuginfo | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | python-perf | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| Red Hat:enterprise_linux:6::client | python-perf-debuginfo | before 0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
+96
Same product
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- 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
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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 | 5.2.6-1 · Debian:12 | Package registry (OSV) |
| debian:linux-4.9 | 4.9.168-1+deb9u5~deb8u1 · Debian:8 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-197.102.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-197.102.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-197.102.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-vanilla | 4.12.14-197.102.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:kernel-zfcpdump | 4.12.14-197.102.2 · openSUSE:Leap 15.3 | Package registry (OSV) |
| red hat:kernel | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-alt | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-bootwrapper | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo-common-ppc64le | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-devel | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-doc | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-headers | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-tools | 0:4.14.0-115.10.1.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:kernel-azure | 4.12.14-16.73.2 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.88.1 · SUSE:Linux Enterprise High Availability Extension 12 SP5 | Package registry (OSV) |
| suse:kernel-docs | 4.12.14-122.88.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:kernel-obs-build | 4.12.14-122.88.2 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:kernel-rt | 4.12.14-10.57.2 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-rt_debug | 4.12.14-10.57.2 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.88.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-source-azure | 4.12.14-16.73.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-source-rt | 4.12.14-10.57.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-syms | 4.12.14-122.88.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:kernel-syms-azure | 4.12.14-16.73.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
+1
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.
No commit or PR link among the references.
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)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- www.securityfocus.com/bid/108076
- access.redhat.com/errata/RHSA-2019:1973
- access.redhat.com/errata/RHSA-2019:2029
- access.redhat.com/errata/RHSA-2019:2043
- access.redhat.com/errata/RHSA-2019:3220
- access.redhat.com/errata/RHSA-2019:3309
- access.redhat.com/errata/RHSA-2019:3517
- access.redhat.com/errata/RHSA-2019:3836
- access.redhat.com/errata/RHSA-2019:3967
- access.redhat.com/errata/RHSA-2019:4058
- access.redhat.com/errata/RHSA-2020:0204
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3900
- lists.debian.org/debian-lts-announce/2019/08/msg00016.html
- lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYTZH6QCNITK7353S6RCRT2PQHZSDPXD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RI3WXXM5URTZSR3RVEKO6MDXDFIKTZ5R/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TOFNJA5NNVXQ6AV6KGZB677JIVXAMJHT/
- seclists.org/bugtraq/2019/Aug/18
- seclists.org/bugtraq/2019/Nov/11
Vendor advisories and official records. Exploit/PoC links are deliberately left out.