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CVE-2024-56652

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: drm/xe/reg_sr: Remove register pool That pool implementation doesn't really work: if the krealloc happens to move the memory an…

Published Dec 27, 2024CWE-416EPSS 0.21%

Overview

CVE-2024-56652 is a high-severity vulnerability. It was published on December 27, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/reg_sr: Remove register pool

That pool implementation doesn't really work: if the krealloc happens to

move the memory and return another address, the entries in the xarray

become invalid, leading to use-after-free later:

BUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe]

Read of size 4 at addr ffff8881244b2590 by task modprobe/2753

Allocated by task 2753:

kasan_save_stack+0x39/0x70

kasan_save_track+0x14/0x40

kasan_save_alloc_info+0x37/0x60

__kasan_kmalloc+0xc3/0xd0

__kmalloc_node_track_caller_noprof+0x200/0x6d0

krealloc_noprof+0x229/0x380

Simplify the code to fix the bug. A better pooling strategy may be added

back later if needed.

(cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/b0193a31a0ca5a0f9e60bb4a86537d46b98111b8Refgit.kernel.org/stable/c/d7b028656c29b22fcde1c6ee1df5b28fbba987b5

How CyberStrike helps

Frequently asked questions

What is CVE-2024-56652?

CVE-2024-56652 is a high-severity vulnerability. It was published on December 27, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-56652?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-56652?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-56652?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-56652 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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