What is CVE-2022-49586?

CVE-2022-49586 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 3.6 onward and patched in 4.19.254, 5.4.208, 5.10.134 and others. CVE-2022-49586 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49586?

CVE-2022-49586 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49586?

Yes, CVE-2022-49586 has been patched. Fixed versions include 4.19.254, 5.4.208, 5.10.134 and others. If you are running Linux kernel 3.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49586 actively exploited?

CVE-2022-49586 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2022-49586

Medium

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_fastopen. While reading sysctl_tcp_fastopen, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-362

CVE-2022-49586 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.6 and later are affected. Fixed in 4.19.254, 5.4.208, 5.10.134, 5.15.58, 5.18.15, 5.19 and their respective stable series.

Affected from

≥ 3.6

Fixed in

✓ 4.19.254 4.19.x ✓ 5.4.208 5.4.x ✓ 5.10.134 5.10.x ✓ 5.15.58 5.15.x ✓ 5.18.15 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49586 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/03da610696a32578fc4f986479341ce9d430df08
Patch
Kernel patch commit
https://git.kernel.org/stable/c/22938534c611136f35e2ca545bb668073ca5ef49
Patch
Kernel patch commit
https://git.kernel.org/stable/c/25d53d858a6c0b89a6e69e376c2a57c4f4c2c8cc
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2022-49586

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49586?

CVE-2022-49586 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 3.6 onward and has been patched in 4.19.254, 5.4.208, 5.10.134 and others. CVE-2022-49586 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49586?

CVE-2022-49586 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49586?

Yes — CVE-2022-49586 has been patched. Fixed versions include 4.19.254, 5.4.208, 5.10.134 and others. If you are running Linux kernel 3.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49586 actively exploited?

No — CVE-2022-49586 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. View CWE-362 on MITRE CWE →