What is CVE-2021-47473?

CVE-2021-47473 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 3.11 onward and patched in 5.10.76, 5.14.15 and 5.15. CVE-2021-47473 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47473?

CVE-2021-47473 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-2021-47473?

Yes, CVE-2021-47473 has been patched. Fixed versions include 5.10.76, 5.14.15 and 5.15. If you are running Linux kernel 3.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47473 actively exploited?

CVE-2021-47473 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2021-47473

Medium

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix a memory leak in an error path of qla2x00_process_els() Commit 8c0eb596baa5 ("[SCSI] qla2xxx: Fix a memory leak in an error path of qla2x00_process_els()"), intended to change: bsg_job->request->msgcode == FC_BSG_HST_ELS_NOLOGIN bsg_job->request->msgcode != FC_BSG_RPT_ELS but changed it to: bsg_job->request->msgcode == FC_BSG_RPT_ELS instead. Change the == to a != to avoid leaking the fcport structure or freeing unallocated memory.

Package Linux Kernel

Published 2024-05-22

Last modified 2025-01-07

CVSS version 3.1

Patch available

Yes

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-401

CVE-2021-47473 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.11 and later are affected. Fixed in 5.10.76, 5.14.15, 5.15 and their respective stable series.

Affected from

≥ 3.11

Fixed in

✓ 5.10.76 5.10.x ✓ 5.14.15 5.14.x ✓ 5.15

References

3 total

Kernel Git
https://git.kernel.org/stable/c/7fb223d0ad801f633c78cbe42b1d1b55f5d163ad

Patch
Kernel Git
https://git.kernel.org/stable/c/96f0aebf29be25254fa585af43924e34aa21fd9a

Patch
Kernel Git
https://git.kernel.org/stable/c/a7fbb56e6c941d9f59437b96412a348e66388d3e

Patch

Details

CVE ID CVE-2021-47473

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-22

Modified 2025-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47473?

CVE-2021-47473 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 3.11 onward and has been patched in 5.10.76, 5.14.15 and 5.15. CVE-2021-47473 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47473?

CVE-2021-47473 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-2021-47473?

Yes. CVE-2021-47473 has been patched. Fixed versions include 5.10.76, 5.14.15 and 5.15. If you are running Linux kernel 3.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47473 actively exploited?

No. CVE-2021-47473 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.