What is CVE-2024-35843?

CVE-2024-35843 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.1 onward and patched in 6.8.2 and 6.9. CVE-2024-35843 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-35843?

CVE-2024-35843 has a CVSS score of 6.8 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Is there a patch available for CVE-2024-35843?

Yes, CVE-2024-35843 has been patched. Fixed versions include 6.8.2 and 6.9. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-35843 actively exploited?

CVE-2024-35843 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-2024-35843

Medium

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Use device rbtree in iopf reporting path The existing I/O page fault handler currently locates the PCI device by calling pci_get_domain_bus_and_slot(). This function searches the list of all PCI devices until the desired device is found. To improve lookup efficiency, replace it with device_rbtree_find() to search the device within the probed device rbtree. The I/O page fault is initiated by the device, which does not have any synchronization mechanism with the software to ensure that the device stays in the probed device tree. Theoretically, a device could be released by the IOMMU subsystem after device_rbtree_find() and before iopf_get_dev_fault_param(), which would cause a use-after-free problem. Add a mutex to synchronize the I/O page fault reporting path and the IOMMU release device path. This lock doesn't introduce any performance overhead, as the conflict between I/O page fault reporting and device releasing is very rare.

Package Linux Kernel

Published 2024-05-17

Last modified 2025-04-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

6.8

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2024-35843 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 6.1 and later are affected. Fixed in 6.8.2, 6.9 and their respective stable series.

Affected from

≥ 6.1

Fixed in

✓ 6.8.2 6.8.x ✓ 6.9

References

2 total

Kernel Git
https://git.kernel.org/stable/c/3d39238991e745c5df85785604f037f35d9d1b15

Patch
Kernel Git
https://git.kernel.org/stable/c/def054b01a867822254e1dda13d587f5c7a99e2a

Patch

Details

CVE ID CVE-2024-35843

Severity Medium

CVSS score 6.8 / 10

CVSS version 3.1

Published 2024-05-17

Modified 2025-04-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-35843?

CVE-2024-35843 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.1 onward and has been patched in 6.8.2 and 6.9. CVE-2024-35843 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-35843?

CVE-2024-35843 has a CVSS score of 6.8 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.
Is there a patch available for CVE-2024-35843?

Yes. CVE-2024-35843 has been patched. Fixed versions include 6.8.2 and 6.9. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-35843 actively exploited?

No. CVE-2024-35843 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.