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CVE-2022-50870 (GCVE-0-2022-50870)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2026-05-11 19:26
VLAI
Title
powerpc/rtas: avoid device tree lookups in rtas_os_term()
Summary
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]
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 088186ded490ced80758200cf8f906ed741df306 , < e23822c7381c59d9e42e65771b6e17c71ed30ea7 (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < 06a07fbb32b3a23eec20a42b1e64474da0a3b33e (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < c2fa91abf22a705cf02f886cd99cff41f4ceda60 (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < f2167f10fcca68ab9ae3f8d94d2c704c5541ac69 (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < d8939315b7342860df143afe0adda6212cdd3193 (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < 698e682c849e356fb47a8be47ca8baa817cf31e0 (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < 464d10e8d797454e16a173ef1292a446b2adf21c (git)
Affected: 088186ded490ced80758200cf8f906ed741df306 , < ed2213bfb192ab51f09f12e9b49b5d482c6493f3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.16
Unaffected: 0 , < 2.6.16 (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.17 , ≤ 6.0.* (semver)
Unaffected: 6.1.3 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: avoid device tree lookups in rtas_os_term()\n\nrtas_os_term() is called during panic. Its behavior depends on a couple\nof conditions in the /rtas node of the device tree, the traversal of\nwhich entails locking and local IRQ state changes. If the kernel panics\nwhile devtree_lock is held, rtas_os_term() as currently written could\nhang.\n\nInstead of discovering the relevant characteristics at panic time,\ncache them in file-static variables at boot. Note the lookup for\n\"ibm,extended-os-term\" is converted to of_property_read_bool() since it\nis a boolean property, not an RTAS function token.\n\n[mpe: Incorporate suggested change from Nick]"
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    "dateReserved": "2025-12-30T12:06:07.136Z",
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Note the lookup for\\n\\\"ibm,extended-os-term\\\" is converted to of_property_read_bool() since it\\nis a boolean property, not an RTAS function token.\\n\\n[mpe: Incorporate suggested change from Nick]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/powerpc/kernel/rtas.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"e23822c7381c59d9e42e65771b6e17c71ed30ea7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"06a07fbb32b3a23eec20a42b1e64474da0a3b33e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"c2fa91abf22a705cf02f886cd99cff41f4ceda60\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"f2167f10fcca68ab9ae3f8d94d2c704c5541ac69\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"d8939315b7342860df143afe0adda6212cdd3193\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"698e682c849e356fb47a8be47ca8baa817cf31e0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"464d10e8d797454e16a173ef1292a446b2adf21c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"088186ded490ced80758200cf8f906ed741df306\",\"lessThan\":\"ed2213bfb192ab51f09f12e9b49b5d482c6493f3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/powerpc/kernel/rtas.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.303\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.270\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.229\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.163\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.87\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.17\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.3\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:36:11+00:00",
      "cve": "CVE-2022-50870",
      "id": "CVE-2022-50870",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: powerpc/rtas: avoid device tree lookups in rtas_os_term()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50870.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T00:15:49Z",
      "cve": "CVE-2022-50870",
      "id": "CVE-2022-50870",
      "initial_release_date": "2025-12-31T00:30:51Z",
      "product_status:known_affected": "475",
      "product_status:known_not_affected": "246",
      "product_status:recommended": "223",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50870",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50870.json",
      "version": "31"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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