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CVE-2022-3566· NVD / CVE Program· CNA VulDB

Linux Kernel TCP tcp_setsockopt race condition

Noroxi assessment

Priority: Monitor (action score 8/100)

  • 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: 0.74% (FIRST EPSS); higher than 53.9% of all records.
  • Someone on the same network segment can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Kernel 4.19.317.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Kernel 4.19.317 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

A vulnerability was identified in Linux Kernel up to 4.19.316/5.4.278/5.10.220/5.15.161. This impacts the function tcp_getsockopt/tcp_setsockopt of the component TCP Handler. Such manipulation leads to race condition. A high complexity level is associated with this attack. The exploitability is said to be difficult. The vulnerability was introduced in 2.6.12, commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ("Linux-2.6.12-rc2"). Upgrading to version 4.19.317, 5.4.279, 5.10.221, 5.15.162 and 6.1 will fix this issue. The name of the patch is fcd31dd8291b23d713245947ec2b2d99ef07aef2/3b32f265805a49071e2c4568a524398ba22bf93c/d529193eae979a7bf2255cd9fe68b7af7a1c91b3/5bb642cc3355ffd3c8bca0a8bd8e6e65bcc2091c/f49cd2f4d6170d27a2c61f1fecb03d8a70c91f57. The affected component should be upgraded.

LowCVSS 2.1 · v4.0—No exploit Fix available
Published
Oct 17, 2022
Updated
Aug 26, 2026
EPSS
0.7% · 53th percentile

Report tools

JSON

Action score

8

Monitor

Low priority for now.

CVSS
8 / 40 · 2.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
2.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

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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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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Affected 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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel2.6.12 and later · before 4.19.317
  • linux linux kernel4.20 and later · before 5.4.279
  • linux linux kernel5.5 and later · before 5.10.221
  • linux linux kernel5.11 and later · before 5.15.162

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Kernel

    • 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1not affected
    • 4.19.316, 5.4.278, 5.10.220, 5.15.161affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernelbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-corebefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-cross-headersbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-debugbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-debug-corebefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-debug-develbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-develbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-docbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-modulesbefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-modules-extrabefore 4.18.0-477.10.1.el8_84.18.0-477.10.1.el8_8
AlmaLinux:8kernel-rtbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-corebefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debugbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debug-kvmbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-develbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8
AlmaLinux:8kernel-rt-kvmbefore 4.18.0-477.10.1.rt7.274.el8_84.18.0-477.10.1.rt7.274.el8_8

+96

Same product

linux: all records

Other 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 KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • 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 haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-3534Oct 17, 2022 · Linux Kernel libbpf btf_dump.c btf_dump_name_dups use after free
    20Monitor
  • ← EarlierCVE-2022-3545Oct 17, 2022 · Linux Kernel IPsec nfp_cppcore.c area_cache_get use after free
    31Monitor
  • Later →CVE-2022-3567Oct 17, 2022 · Linux Kernel IPv6 inet6_dgram_ops race condition
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Kernel4.19.317 · descriptionVendor (CNA)
almalinux:kernel-rt5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-core5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-core5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-devel5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-kvm5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-modules5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-modules-core5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-debug-modules-extra5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-devel5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-kvm5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt-modules5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
opensuse:kernel-azure5.14.21-150400.14.28.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-source-azure5.14.21-150400.14.28.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-syms-azure5.14.21-150400.14.28.1 · openSUSE:Leap 15.4Package registry (OSV)
red hat:kernel-rt0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-core0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-core0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-extra0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfvPackage registry (OSV)
suse:kernel-64kb5.14.21-150400.24.38.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4Package 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.

EPSS, last 120 days

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 researchers

Finders, 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.

All national notices →

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Adjacent
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records