What is CVE-2021-47583?

CVE-2021-47583 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.7 onward and patched in 4.19.222, 5.4.168, 5.10.88 and others. CVE-2021-47583 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47583?

CVE-2021-47583 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-2021-47583?

Yes, CVE-2021-47583 has been patched. Fixed versions include 4.19.222, 5.4.168, 5.10.88 and others. If you are running Linux kernel 3.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47583 actively exploited?

CVE-2021-47583 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47583

Medium

In the Linux kernel, the following vulnerability has been resolved: media: mxl111sf: change mutex_init() location Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location. Previous mutex_init(&state->msg_lock) call was in ->init() function, but dvb_usbv2_init() has this order of calls: dvb_usbv2_init() dvb_usbv2_adapter_init() dvb_usbv2_adapter_frontend_init() props->frontend_attach() props->init() Since mxl111sf_* devices call mxl111sf_ctrl_msg() in ->frontend_attach() internally we need to initialize state->msg_lock before frontend_attach(). To achieve it, ->probe() call added to all mxl111sf_* devices, which will simply initiaize mutex.

Package Linux Kernel

Published 2024-06-19

Last modified 2024-11-21

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-908

CVE-2021-47583 is classified as CWE-908

See CWE-908 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 3.7 and later are affected. Fixed in 4.19.222, 5.4.168, 5.10.88, 5.15.11, 5.16 and their respective stable series.

Affected from

≥ 3.7

Fixed in

✓ 4.19.222 4.19.x ✓ 5.4.168 5.4.x ✓ 5.10.88 5.10.x ✓ 5.15.11 5.15.x ✓ 5.16

References

5 total

Kernel Git
https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f

Patch
Kernel Git
https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390

Patch
Kernel Git
https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba

Patch
Kernel Git
https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035

Patch
Kernel Git
https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a

Patch

Details

CVE ID CVE-2021-47583

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-06-19

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47583?

CVE-2021-47583 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.7 onward and has been patched in 4.19.222, 5.4.168, 5.10.88 and others. CVE-2021-47583 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47583?

CVE-2021-47583 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-2021-47583?

Yes. CVE-2021-47583 has been patched. Fixed versions include 4.19.222, 5.4.168, 5.10.88 and others. If you are running Linux kernel 3.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47583 actively exploited?

No. CVE-2021-47583 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.