What is CVE-2024-42108?

CVE-2024-42108 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.8 onward and patched in 6.9.9 and 6.10. CVE-2024-42108 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-42108?

CVE-2024-42108 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-2024-42108?

Yes, CVE-2024-42108 has been patched. Fixed versions include 6.9.9 and 6.10. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-42108 actively exploited?

CVE-2024-42108 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-2024-42108

Medium

In the Linux kernel, the following vulnerability has been resolved: net: rswitch: Avoid use-after-free in rswitch_poll() The use-after-free is actually in rswitch_tx_free(), which is inlined in rswitch_poll(). Since `skb` and `gq->skbs[gq->dirty]` are in fact the same pointer, the skb is first freed using dev_kfree_skb_any(), then the value in skb->len is used to update the interface statistics. Let's move around the instructions to use skb->len before the skb is freed. This bug is trivial to reproduce using KFENCE. It will trigger a splat every few packets. A simple ARP request or ICMP echo request is enough.

Package Linux Kernel

Published 2024-07-30

Last modified 2025-04-17

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-416

CVE-2024-42108 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 6.8 and later are affected. Fixed in 6.9.9, 6.10 and their respective stable series.

Affected from

≥ 6.8

Fixed in

✓ 6.9.9 6.9.x ✓ 6.10

References

3 total

Kernel Git
https://git.kernel.org/stable/c/4a41bb9f2b402469d425a1c13359d3b3ea4e6403

Patch
Kernel Git
https://git.kernel.org/stable/c/92cbbe7759193e3418f38d0d73f8fe125312c58b

Patch
Kernel Git
https://git.kernel.org/stable/c/9a0c28efeec6383ef22e97437616b920e7320b67

Patch

Details

CVE ID CVE-2024-42108

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-07-30

Modified 2025-04-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-42108?

CVE-2024-42108 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.8 onward and has been patched in 6.9.9 and 6.10. CVE-2024-42108 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-42108?

CVE-2024-42108 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-2024-42108?

Yes. CVE-2024-42108 has been patched. Fixed versions include 6.9.9 and 6.10. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-42108 actively exploited?

No. CVE-2024-42108 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.