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CVE-2024-56559

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: combine all TLB flush operations of KASAN shadow virtual address into one operation When compiling kernel source 'm…

Published Dec 27, 2024CWE-667EPSS 0.14%

Overview

CVE-2024-56559 is a medium-severity vulnerability. It was published on December 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

mm/vmalloc: combine all TLB flush operations of KASAN shadow virtual address into one operation

When compiling kernel source 'make -j $(nproc)' with the up-and-running

KASAN-enabled kernel on a 256-core machine, the following soft lockup is

shown:

watchdog: BUG: soft lockup - CPU#28 stuck for 22s! [kworker/28:1:1760]

CPU: 28 PID: 1760 Comm: kworker/28:1 Kdump: loaded Not tainted 6.10.0-rc5 #95

Workqueue: events drain_vmap_area_work

RIP: 0010:smp_call_function_many_cond+0x1d8/0xbb0

Code: 38 c8 7c 08 84 c9 0f 85 49 08 00 00 8b 45 08 a8 01 74 2e 48 89 f1 49 89 f7 48 c1 e9 03 41 83 e7 07 4c 01 e9 41 83 c7 03 f3 90 <0f> b6 01 41 38 c7 7c 08 84 c0 0f 85 d4 06 00 00 8b 45 08 a8 01 75

RSP: 0018:ffffc9000cb3fb60 EFLAGS: 00000202

RAX: 0000000000000011 RBX: ffff8883bc4469c0 RCX: ffffed10776e9949

RDX: 0000000000000002 RSI: ffff8883bb74ca48 RDI: ffffffff8434dc50

RBP: ffff8883bb74ca40 R08: ffff888103585dc0 R09: ffff8884533a1800

R

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/9e9e085effe9b7e342138fde3cf8577d22509932Refgit.kernel.org/stable/c/f9a18889aad9b4c19c6c4550c67ad4f9ed2a354f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-56559?

CVE-2024-56559 is a medium-severity vulnerability. It was published on December 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56559?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-56559?

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-2024-56559?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-56559 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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