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Vulnerability · Published Dec 30, 2025 · Assigned by Linux

CVE-2022-50870powerpc/rtas: avoid device tree lookups in rtas_os_term()

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 88.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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]

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.4-1DEBIAN-CVE-2022-50870
Debian:13linux6.1.4-1DEBIAN-CVE-2022-50870
Debian:14linux6.1.4-1DEBIAN-CVE-2022-50870
Ubuntu:22.04:LTSlinux5.15.0-69.76UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-aws5.15.0-1033.37UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure5.15.0-1035.42UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1035.42.1UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gcp5.15.0-1031.38UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gke5.15.0-1030.35UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1017.22UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-ibm5.15.0-1027.30UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1027.32UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-kvm5.15.0-1030.35UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-69.76UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1023.23UBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oracle5.15.0-1032.38UBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-raspi5.15.0-1026.28UBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50870
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50870

Affected products (as reported)

VendorProductVersions
Linux Linux 088186ded490ced80758200cf8f906ed741df306 – before e23822c7381c59d9e42e65771b6e17c71ed30ea7088186ded490ced80758200cf8f906ed741df306 – before 06a07fbb32b3a23eec20a42b1e64474da0a3b33e088186ded490ced80758200cf8f906ed741df306 – before c2fa91abf22a705cf02f886cd99cff41f4ceda60088186ded490ced80758200cf8f906ed741df306 – before f2167f10fcca68ab9ae3f8d94d2c704c5541ac69088186ded490ced80758200cf8f906ed741df306 – before d8939315b7342860df143afe0adda6212cdd3193088186ded490ced80758200cf8f906ed741df306 – before 698e682c849e356fb47a8be47ca8baa817cf31e0088186ded490ced80758200cf8f906ed741df306 – before 464d10e8d797454e16a173ef1292a446b2adf21c088186ded490ced80758200cf8f906ed741df306 – before ed2213bfb192ab51f09f12e9b49b5d482c6493f3
Linux Linux 2.6.16

References