What is CVE-2021-47086?

CVE-2021-47086 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.3 onward and patched in 4.4.297, 4.9.295, 4.14.260 and others. CVE-2021-47086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47086?

CVE-2021-47086 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-2021-47086?

Yes, CVE-2021-47086 has been patched. Fixed versions include 4.4.297, 4.9.295, 4.14.260 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47086 actively exploited?

CVE-2021-47086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47086

Medium

In the Linux kernel, the following vulnerability has been resolved: phonet/pep: refuse to enable an unbound pipe This ioctl() implicitly assumed that the socket was already bound to a valid local socket name, i.e. Phonet object. If the socket was not bound, two separate problems would occur: 1) We'd send an pipe enablement request with an invalid source object. 2) Later socket calls could BUG on the socket unexpectedly being connected yet not bound to a valid object.

Package Linux Kernel

Published 2024-03-04

Last modified 2025-01-16

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

Affected versions

Linux kernel versions 3.3 and later are affected. Fixed in 4.4.297, 4.9.295, 4.14.260, 4.19.223, 5.4.169, 5.10.89, 5.15.12, 5.16 and their respective stable series.

Affected from

≥ 3.3

Fixed in

✓ 4.4.297 4.4.x ✓ 4.9.295 4.9.x ✓ 4.14.260 4.14.x ✓ 4.19.223 4.19.x ✓ 5.4.169 5.4.x ✓ 5.10.89 5.10.x ✓ 5.15.12 5.15.x ✓ 5.16

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59

Patch
Kernel Git
https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161

Patch
Kernel Git
https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b

Patch
Kernel Git
https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52

Patch
Kernel Git
https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2021-47086

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-03-04

Modified 2025-01-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47086?

CVE-2021-47086 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.3 onward and has been patched in 4.4.297, 4.9.295, 4.14.260 and others. CVE-2021-47086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47086?

CVE-2021-47086 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-2021-47086?

Yes. CVE-2021-47086 has been patched. Fixed versions include 4.4.297, 4.9.295, 4.14.260 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47086 actively exploited?

No. CVE-2021-47086 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.