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

powerpc/32: Fix hardlockup on vmap stack overflow

Since the commit c118c7303ad5 ("powerpc/32: Fix vmap stack - Do not
activate MMU before reading task struct") a vmap stack overflow
results in a hard lockup. This is because emergency_ctx is still
addressed with its virtual address allthough data MMU is not active
anymore at that time.

Fix it by using a physical address instead.

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Thu, 18 Sep 2025 16:00:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*

Fri, 20 Dec 2024 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T12:41:44.062Z

Reserved: 2024-05-24T15:11:00.728Z

Link: CVE-2021-47567

cve-icon Vulnrichment

Updated: 2024-08-04T05:39:59.830Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-24T15:15:21.837

Modified: 2025-09-18T15:47:52.753

Link: CVE-2021-47567

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-05-24T00:00:00Z

Links: CVE-2021-47567 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T16:01:32Z

Weaknesses