What is CVE-2024-46838?

CVE-2024-46838 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.6 onward and patched in 6.6.51, 6.10.10 and 6.11. CVE-2024-46838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-46838?

CVE-2024-46838 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-2024-46838?

Yes, CVE-2024-46838 has been patched. Fixed versions include 6.6.51, 6.10.10 and 6.11. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-46838 actively exploited?

CVE-2024-46838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-46838

Medium

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: don't BUG_ON() if khugepaged yanks our page table Since khugepaged was changed to allow retracting page tables in file mappings without holding the mmap lock, these BUG_ON()s are wrong - get rid of them. We could also remove the preceding "if (unlikely(...))" block, but then we could reach pte_offset_map_lock() with transhuge pages not just for file mappings but also for anonymous mappings - which would probably be fine but I think is not necessarily expected.

Package Linux Kernel

Published 2024-09-27

Last modified 2024-10-09

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 6.6 and later are affected. Fixed in 6.6.51, 6.10.10, 6.11 and their respective stable series.

Affected from

≥ 6.6

Fixed in

✓ 6.6.51 6.6.x ✓ 6.10.10 6.10.x ✓ 6.11

References

The following references provide additional information about CVE-2024-46838 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/4828d207dc5161dc7ddf9a4f6dcfd80c7dd7d20a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4a594acc12d5954cdc71d4450a386748bf3d136a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/db978287e908d48b209e374b00d847b2d785e0a9
Patch

Details

CVE ID CVE-2024-46838

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-09-27

Modified 2024-10-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-46838?

CVE-2024-46838 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.6 onward and has been patched in 6.6.51, 6.10.10 and 6.11. CVE-2024-46838 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-46838?

CVE-2024-46838 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-2024-46838?

Yes — CVE-2024-46838 has been patched. Fixed versions include 6.6.51, 6.10.10 and 6.11. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-46838 actively exploited?

No — CVE-2024-46838 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.