What’s Vulnerable › Vulnerabilities

CVE-2024-45028: mmc: mmc_test: Fix NULL dereference on allocation failure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-11 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 2.6.27 before 4.19.321; from 4.20 before 5.4.283; from 5.5 before 5.10.225; from 5.11 before 5.15.166; from 5.16 before 6.1.107; from 6.2 before 6.6.48 — fixed in 4.19.321, 5.10.225, 5.15.166, 5.4.283, 6.1.107, 6.10.7

How to fix

Upgrade to a fixed version: Linux kernel 4.19.321, 5.10.225, 5.15.166, 5.4.283. Check the vendor advisory for mitigations.

References

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

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