What is CVE-2023-2177?

CVE-2023-2177 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from Linux Kernel prior to Kernel 5.19 RC17 onward. CVE-2023-2177 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-2177?

CVE-2023-2177 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-2177?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-2177 patch availability.

Is CVE-2023-2177 actively exploited?

CVE-2023-2177 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2023-2177

Medium

A null pointer dereference issue was found in the sctp network protocol in net/sctp/stream_sched.c in Linux Kernel. If stream_in allocation is failed, stream_out is freed which would further be accessed. A local user could use this flaw to crash the system or potentially cause a denial of service.

Package Linux Kernel

Published 2023-04-20

Last modified 2025-03-18

CVSS version 3.1

Patch available

Not yet patched

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2023-2177 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions Linux Kernel prior to Kernel 5.19 RC17 and later are affected. No fixed version recorded yet.

Affected from

≥ Linux Kernel prior to Kernel 5.19 RC17

References

1 total

Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=181d8d2066c0

Mailing List Patch Vendor Advisory

Details

CVE ID CVE-2023-2177

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2023-04-20

Modified 2025-03-18

KEV No

Patch

Not yet patched

Package linux

Frequently asked questions

What is CVE-2023-2177?

CVE-2023-2177 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from Linux Kernel prior to Kernel 5.19 RC17 onward . CVE-2023-2177 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-2177?

CVE-2023-2177 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-2177?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-2177 patch availability.
Is CVE-2023-2177 actively exploited?

No. CVE-2023-2177 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.