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Fencer Vulns
medium 5.5

CVE-2021-33061 json

Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentiall…

published 2022-02-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19776

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.

Patch / fix

  • intel 82599en_firmware 5.13.4
  • intel 82599eb_firmware 5.13.4
  • intel 82599es_firmware 5.13.4
  • linux Debian 14, Debian 13, Debian 12 5.18.2-1

debian advisories DEBIAN-CVE-2021-33061

  • linux Ubuntu 20.04 LTS 5.4.0-125.141
  • linux Ubuntu 22.04 LTS 5.15.0-47.51
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1084.91
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1019.23
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1087.95
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1017.23
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1081.87
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1015.18

ubuntu advisories UBUNTU-CVE-2021-33061

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-syms-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-rt_debug SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-source-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • kernel-syms-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • kernel-source-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • dtb-aarch64 openSUSE Leap 15.4 5.14.21-150400.24.11.1

suse advisories SUSE-SU-2022:2629-1SUSE-SU-2022:2615-1SUSE-SU-2022:2520-1SUSE-SU-2022:2177-1SUSE-SU-2022:2116-1SUSE-SU-2022:2111-1

  • kernel-rt openSUSE Leap Micro 5.2 5.3.18-150300.93.1

opensuse advisories openSUSE-SU-2022:2177-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-33061 updated cvss 5.5

kernel: insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may lead to DoS

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +82 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a Intel(R) 82599 Ethernet Controllers and Adapters

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.