What is CVE-2024-40991?

CVE-2024-40991 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.9 onward and patched in 6.9.7 and 6.10. CVE-2024-40991 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40991?

CVE-2024-40991 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-2024-40991?

Yes, CVE-2024-40991 has been patched. Fixed versions include 6.9.7 and 6.10. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-40991 actively exploited?

CVE-2024-40991 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-40991

Medium

In the Linux kernel, the following vulnerability has been resolved: dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id() The of_k3_udma_glue_parse_chn_by_id() helper function erroneously invokes "of_node_put()" on the "udmax_np" device-node passed to it, without having incremented its reference count at any point. Fix it.

Package Linux Kernel

Published 2024-07-12

Last modified 2025-10-06

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

Affected versions

Linux kernel versions 6.9 and later are affected. Fixed in 6.9.7, 6.10 and their respective stable series.

Affected from

≥ 6.9

Fixed in

✓ 6.9.7 6.9.x ✓ 6.10

References

2 total

Kernel Git
https://git.kernel.org/stable/c/a5ab5f413d1e4c7ed5f64271b025f0726374509e

Patch
Kernel Git
https://git.kernel.org/stable/c/ba27e9d2207784da748b19170a2e56bd7770bd81

Patch

Details

CVE ID CVE-2024-40991

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-07-12

Modified 2025-10-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-40991?

CVE-2024-40991 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.9 onward and has been patched in 6.9.7 and 6.10. CVE-2024-40991 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40991?

CVE-2024-40991 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-2024-40991?

Yes. CVE-2024-40991 has been patched. Fixed versions include 6.9.7 and 6.10. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-40991 actively exploited?

No. CVE-2024-40991 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.