CVE-2024-45028: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: mmc_test: Fix NULL dereference on allocation failure If the "test->highmem = alloc_pages()" allocation fails then calling __free_pages(test->highmem) will result in a NULL dereference. Also change the error code to -ENOMEM instead of returning success.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.27 — 4.19.321
linux	linux_kernel	4.20 — 5.4.283
linux	linux_kernel	5.5 — 5.10.225
linux	linux_kernel	5.11 — 5.15.166
linux	linux_kernel	5.16 — 6.1.107
linux	linux_kernel	6.2 — 6.6.48
linux	linux_kernel	6.7 — 6.10.7
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/2b507b03991f44dfb202fc2a82c9874d1b1f0c06 https://git.kernel.org/stable/c/3b4e76ceae5b5a46c968bd952f551ce173809f63 https://git.kernel.org/stable/c/9b9ba386d7bfdbc38445932c90fa9444c0524bea https://git.kernel.org/stable/c/a1e627af32ed60713941cbfc8075d44cad07f6dd https://git.kernel.org/stable/c/cac2815f49d343b2f0acc4973d2c14918ac3ab0c https://git.kernel.org/stable/c/e40515582141a9e7c84b269be699c05236a499a6 https://git.kernel.org/stable/c/e97be13a9f51284da450dd2a592e3fa87b49cdc9 https://git.kernel.org/stable/c/ecb15b8ca12c0cbdab81e307e9795214d8b90890

Other References

https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-45028? +

In the Linux kernel, the following vulnerability has been resolved: mmc: mmc_test: Fix NULL dereference on allocation failure If the "test->highmem = alloc_pages()" allocation fails then calling __free_pages(test->highmem) will result in a NULL dereference. Also change the error code to -ENOMEM instead of returning success. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-45028? +

CVE-2024-45028 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-45028? +

CVE-2024-45028 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-45028? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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