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CVE-2022-50870

Estado: AplazadaSin puntuar—

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.

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[mpe: Incorporate suggested change from Nick]

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-50870",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "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",
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              "versionType": "git"
            },
            {
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              "lessThan": "ed2213bfb192ab51f09f12e9b49b5d482c6493f3",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/powerpc/kernel/rtas.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/powerpc/kernel/rtas.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:16:01.887",
  "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"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "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]"
    }
  ],
  "lastModified": "2026-06-17T05:24:19.637",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}