What is CVE-2024-35985?

CVE-2024-35985 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.6.4 onward and patched in 6.6.30, 6.8.9 and 6.9. CVE-2024-35985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-35985?

CVE-2024-35985 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-2024-35985?

Yes, CVE-2024-35985 has been patched. Fixed versions include 6.6.30, 6.8.9 and 6.9. If you are running Linux kernel 6.6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-35985 actively exploited?

CVE-2024-35985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2024-35985

Medium

In the Linux kernel, the following vulnerability has been resolved: sched/eevdf: Prevent vlag from going out of bounds in reweight_eevdf() It was possible to have pick_eevdf() return NULL, which then causes a NULL-deref. This turned out to be due to entity_eligible() returning falsely negative because of a s64 multiplcation overflow. Specifically, reweight_eevdf() computes the vlag without considering the limit placed upon vlag as update_entity_lag() does, and then the scaling multiplication (remember that weight is 20bit fixed point) can overflow. This then leads to the new vruntime being weird which then causes the above entity_eligible() to go side-ways and claim nothing is eligible. Thus limit the range of vlag accordingly. All this was quite rare, but fatal when it does happen.

Package Linux Kernel

Published 2024-05-20

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

Weakness type

CWE-476

CVE-2024-35985 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.6.4, 6.7 and later are affected. Fixed in 6.6.30, 6.8.9, 6.9 and their respective stable series.

Affected from

≥ 6.6.4 ≥ 6.7

Fixed in

✓ 6.6.30 6.6.x ✓ 6.8.9 6.8.x ✓ 6.9

References

3 total

Kernel Git
https://git.kernel.org/stable/c/06f27e6d7bf0abf54488259ef36bbf0e1fccb35c

Patch
Kernel Git
https://git.kernel.org/stable/c/1560d1f6eb6b398bddd80c16676776c0325fe5fe

Patch
Kernel Git
https://git.kernel.org/stable/c/470d347b14b0ecffa9b39cf8f644fa2351db3efb

Patch

Details

CVE ID CVE-2024-35985

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-20

Modified 2025-01-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-35985?

CVE-2024-35985 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.6.4 onward and has been patched in 6.6.30, 6.8.9 and 6.9. CVE-2024-35985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-35985?

CVE-2024-35985 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-2024-35985?

Yes. CVE-2024-35985 has been patched. Fixed versions include 6.6.30, 6.8.9 and 6.9. If you are running Linux kernel 6.6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-35985 actively exploited?

No. CVE-2024-35985 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.