What is CVE-2024-40948?

CVE-2024-40948 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.17 onward and patched in 6.1.96, 6.6.36, 6.9.7 and others. CVE-2024-40948 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40948?

CVE-2024-40948 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-2024-40948?

Yes, CVE-2024-40948 has been patched. Fixed versions include 6.1.96, 6.6.36, 6.9.7 and others. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-40948 actively exploited?

CVE-2024-40948 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-40948

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/page_table_check: fix crash on ZONE_DEVICE Not all pages may apply to pgtable check. One example is ZONE_DEVICE pages: they map PFNs directly, and they don't allocate page_ext at all even if there's struct page around. One may reference devm_memremap_pages(). When both ZONE_DEVICE and page-table-check enabled, then try to map some dax memories, one can trigger kernel bug constantly now when the kernel was trying to inject some pfn maps on the dax device: kernel BUG at mm/page_table_check.c:55! While it's pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page fault resolutions, skip all the checks if page_ext doesn't even exist in pgtable checker, which applies to ZONE_DEVICE but maybe more.

Package Linux Kernel

Published 2024-07-12

Last modified 2025-11-03

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 5.17 and later are affected. Fixed in 6.1.96, 6.6.36, 6.9.7, 6.10 and their respective stable series.

Affected from

≥ 5.17

Fixed in

✓ 6.1.96 6.1.x ✓ 6.6.36 6.6.x ✓ 6.9.7 6.9.x ✓ 6.10

References

5 total

Kernel Git
https://git.kernel.org/stable/c/51897f99351fff7b57f4f141940fa93b4e90fd2b

Patch
Kernel Git
https://git.kernel.org/stable/c/84d3549d54f5ff9fa3281257be3019386f51d1a0

Patch
Kernel Git
https://git.kernel.org/stable/c/8bb592c2eca8fd2bc06db7d80b38da18da4a2f43

Patch
Kernel Git
https://git.kernel.org/stable/c/dec2382247860d2134c8d41e103e26460c099629

Patch
Debian Security
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Details

CVE ID CVE-2024-40948

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-07-12

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-40948?

CVE-2024-40948 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.17 onward and has been patched in 6.1.96, 6.6.36, 6.9.7 and others. CVE-2024-40948 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40948?

CVE-2024-40948 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-2024-40948?

Yes. CVE-2024-40948 has been patched. Fixed versions include 6.1.96, 6.6.36, 6.9.7 and others. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-40948 actively exploited?

No. CVE-2024-40948 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.