In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtas_os_term() rtas_os_term() is called during panic. Its behavior depends on a couple of conditions in the /rtas node of the device tree, the traversal of which entails locking and local IRQ state changes. If the kernel panics while devtree_lock is held, rtas_os_term() as currently written could hang. Instead of discovering the relevant characteristics at panic time, cache them in file-static variables at boot. Note the lookup for "ibm,extended-os-term" is converted to of_property_read_bool() since it is a boolean property, not an RTAS function token. [mpe: Incorporate suggested change from Nick]

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e cve-icon cve-icon
https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c cve-icon cve-icon
https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0 cve-icon cve-icon
https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60 cve-icon cve-icon
https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193 cve-icon cve-icon
https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7 cve-icon cve-icon
https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3 cve-icon cve-icon
https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025123050-CVE-2022-50870-c90b@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50870 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50870 cve-icon
History

Wed, 31 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 30 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtas_os_term() rtas_os_term() is called during panic. Its behavior depends on a couple of conditions in the /rtas node of the device tree, the traversal of which entails locking and local IRQ state changes. If the kernel panics while devtree_lock is held, rtas_os_term() as currently written could hang. Instead of discovering the relevant characteristics at panic time, cache them in file-static variables at boot. Note the lookup for "ibm,extended-os-term" is converted to of_property_read_bool() since it is a boolean property, not an RTAS function token. [mpe: Incorporate suggested change from Nick]
Title powerpc/rtas: avoid device tree lookups in rtas_os_term()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-12-30T12:15:40.718Z

Updated: 2025-12-30T12:15:40.718Z

Reserved: 2025-12-30T12:06:07.136Z

Link: CVE-2022-50870

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-30T13:16:01.887

Modified: 2025-12-31T20:43:05.160

Link: CVE-2022-50870

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2022-50870 - Bugzilla