What is CVE-2024-27043?

CVE-2024-27043 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 2.6.21 onward and patched in 4.19.311, 5.4.273, 5.10.214 and others. CVE-2024-27043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27043?

CVE-2024-27043 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2024-27043?

Yes, CVE-2024-27043 has been patched. Fixed versions include 4.19.311, 5.4.273, 5.10.214 and others. If you are running Linux kernel 2.6.21 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27043 actively exploited?

CVE-2024-27043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2024-27043

High

In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.

Package Linux Kernel

Published 2024-05-01

Last modified 2024-12-23

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2024-27043 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.21 and later are affected. Fixed in 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9 and their respective stable series.

Affected from

≥ 2.6.21

Fixed in

✓ 4.19.311 4.19.x ✓ 5.4.273 5.4.x ✓ 5.10.214 5.10.x ✓ 5.15.153 5.15.x ✓ 6.1.83 6.1.x ✓ 6.6.23 6.6.x ✓ 6.7.11 6.7.x ✓ 6.8.2 6.8.x ✓ 6.9

References

11 total

Kernel Git
https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644

Patch
Kernel Git
https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e

Patch
Kernel Git
https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d

Patch
Kernel Git
https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712

Patch
Kernel Git
https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62

Patch

Showing 5 of 11 references View all on NVD

Details

CVE ID CVE-2024-27043

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-01

Modified 2024-12-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27043?

CVE-2024-27043 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 2.6.21 onward and has been patched in 4.19.311, 5.4.273, 5.10.214 and others. CVE-2024-27043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27043?

CVE-2024-27043 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2024-27043?

Yes. CVE-2024-27043 has been patched. Fixed versions include 4.19.311, 5.4.273, 5.10.214 and others. If you are running Linux kernel 2.6.21 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27043 actively exploited?

No. CVE-2024-27043 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.