Kernel: vhost_net: infinite loop while receiving packets leads to DoS
Published Apr 25, 2019
7.7
HIGHCVSS 3.1
EPSS 4.35%
Description
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.
Affected products
-
- Version affects up to and including v5.1-rc6StatusaffectedConstraints-
- Version
Configuration 1
- ≥ 2.6.34 · < 3.16.72
- ≥ 3.17 · < 4.4.191
- ≥ 4.5 · < 4.9.190
- ≥ 4.10 · < 4.14.133
- ≥ 4.15 · < 4.19.64
- ≥ 4.20 · < 5.2
Configuration 2
- 29
- 30
Configuration 3
- 6.0
- 7.0
Configuration 4
- 8.0
- 9.0
- 10.0
Configuration 5
- 16.04
- 18.04
- 19.04
Configuration 6
- ≥ 9.5
- n/a
- n/a
- n/a
- ≥ 7.2
- ≥ 7.2
- ≥ 7.2
Configuration 7
- n/a
Configuration 8
- 8.2
Configuration 9
- 28
- 29
- 30
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-754.24.2.el6
Fixed · RHSA-2019:3836
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1062.el7
Fixed · RHSA-2019:2029
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.10.1.el7a
Fixed · RHSA-2019:1973
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1062.rt56.1022.el7
Fixed · RHSA-2019:2043
Red Hat Enterprise Linux 7.4 Advanced Update Support
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.4 Telco Extended Update Support
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
kernel-0:3.10.0-693.61.1.el7
Fixed · RHSA-2019:4058
Red Hat Enterprise Linux 7.5 Extended Update Support
kernel-0:3.10.0-862.44.2.el7
Fixed · RHSA-2019:3967
Red Hat Enterprise Linux 7.6 Extended Update Support
kernel-0:3.10.0-957.38.1.el7
Fixed · RHSA-2019:3220
Red Hat Enterprise Linux 8
kernel-0:4.18.0-147.el8
Fixed · RHSA-2019:3517
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-147.rt24.93.el8
Fixed · RHSA-2019:3309
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
kernel-0:4.18.0-80.15.1.el8_0
Fixed · RHSA-2020:0204
Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS
kernel-0:3.10.0-957.38.1.el7
Fixed · RHSA-2019:3220
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-754.24.2.el6 | Fixed | RHSA-2019:3836 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1062.el7 | Fixed | RHSA-2019:2029 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.10.1.el7a | Fixed | RHSA-2019:1973 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1062.rt56.1022.el7 | Fixed | RHSA-2019:2043 |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.4 Telco Extended Update Support | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions | kernel-0:3.10.0-693.61.1.el7 | Fixed | RHSA-2019:4058 |
| Red Hat Enterprise Linux 7.5 Extended Update Support | kernel-0:3.10.0-862.44.2.el7 | Fixed | RHSA-2019:3967 |
| Red Hat Enterprise Linux 7.6 Extended Update Support | kernel-0:3.10.0-957.38.1.el7 | Fixed | RHSA-2019:3220 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-147.el8 | Fixed | RHSA-2019:3517 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-147.rt24.93.el8 | Fixed | RHSA-2019:3309 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | kernel-0:4.18.0-80.15.1.el8_0 | Fixed | RHSA-2020:0204 |
| Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS | kernel-0:3.10.0-957.38.1.el7 | Fixed | RHSA-2019:3220 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2. This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6 and 7. Future kernel updates for Red Hat Enterprise Linux 6 and 7 may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:S/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 1, 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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.35% (0.04345) | 90.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.46% (0.04462) | 90.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00082) | 21.58th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00080) | 36.18th | v3 (v2023.03.01) |
| Apr 18, 2024 | 0.12% (0.00121) | 45.88th | v3 (v2023.03.01) |
| Jun 20, 2023 | 0.23% (0.00232) | 60.08th | v3 (v2023.03.01) |
| May 19, 2023 | 0.18% (0.00184) | 54.24th | v3 (v2023.03.01) |
| Apr 1, 2023 | 0.17% (0.00165) | 51.65th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00172) | 52.47th | 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 | 18.26% (0.18256) | 93.55th | v2 (v2022.01.01) |
| Feb 3, 2022 | 22.28% (0.22278) | 94.80th | v1 |
| Jan 6, 2022 | 22.28% (0.22278) | 94.74th | v1 |
| Sep 1, 2021 | 6.00% (0.06005) | 89.55th | v1 |
| Jun 15, 2021 | 6.00% (0.06005) | 0.00th | v1 |
| Apr 14, 2021 | 5.82% (0.05815) | 0.00th | v1 |
References (33)
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- http://www.securityfocus.com/bid/108076 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
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Change history (0)
No recorded changes yet.