CVE-2021-47620

Medium

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.

Package Linux Kernel
Published 2024-06-20
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
High
Availability
None
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness type

CWE-125

CVE-2021-47620 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.4.300, 4.9.298, 4.14.263, 4.19.226, 5.4.174, 5.10.94, 5.15.17, 5.16.3 and later are affected. Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5 and their respective stable series.

Affected from
≥ 4.4.300 ≥ 4.9.298 ≥ 4.14.263 ≥ 4.19.226 ≥ 5.4.174 ≥ 5.10.94 ≥ 5.15.17 ≥ 5.16.3
Fixed in
✓ 4.4.302 4.4.x ✓ 4.9.300 4.9.x ✓ 4.14.265 4.14.x ✓ 4.19.228 4.19.x ✓ 5.4.176 5.4.x ✓ 5.10.96 5.10.x ✓ 5.15.19 5.15.x ✓ 5.16.5 5.16.x

References

9 total
Showing 5 of 9 references View all on NVD

Frequently asked questions

  • What is CVE-2021-47620?

    CVE-2021-47620 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 4.4.300 onward and has been patched in 4.4.302, 4.9.300, 4.14.265 and others. CVE-2021-47620 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-47620?

    CVE-2021-47620 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:H/A:N .

  • Is there a patch available for CVE-2021-47620?

    Yes. CVE-2021-47620 has been patched. Fixed versions include 4.4.302, 4.9.300, 4.14.265 and others. If you are running Linux kernel 4.4.300 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2021-47620 actively exploited?

    No. CVE-2021-47620 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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