CVE-2024-56584

5.5 · MEDIUM

Published Dec 27, 2024 linux CWE-770 EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-56584 is a medium-severity vulnerability affecting linux linux_kernel. 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:

io_uring/tctx: work around xa_store() allocation error issue

syzbot triggered the following WARN_ON:

WARNING: CPU: 0 PID: 16 at io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51

which is the

WARN_ON_ONCE(!xa_empty(&tctx->xa));

sanity check in __io_uring_free() when a io_uring_task is going through

its final put. The syzbot test case includes injecting memory allocation

failures, and it very much looks like xa_store() can fail one of its

memory allocations and end up with ->head being non-NULL even though no

entries exist in the xarray.

Until this issue gets sorted out, work around it by attempting to

iterate entries in our xarray, and WARN_ON_ONCE() if one is found.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 5.1, < 6.1.120	Affected

References

Ref git.kernel.org/stable/c/3a84fa784710990964c1e35df743851ab2863898 Ref git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e Ref git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4 Ref git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0 Ref git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d Ref git.kernel.org/stable/c/e05c070b401f6365c503e2b59f091331965c4fb9 Ref lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Frequently Asked Questions

What is CVE-2024-56584?

CVE-2024-56584 is a medium-severity vulnerability affecting linux linux_kernel. It was published on December 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56584?

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-2024-56584?

How can CyberStrike help with CVE-2024-56584?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56584 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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HackBrowser

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