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CVE-2022-49254

Estado: AnalizadaMedia (5.5)—

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

media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats()

In cal_ctx_v4l2_init_formats(), devm_kzalloc() is assigned to ctx->active_fmt and there is a dereference of it after that, which could lead to NULL pointer dereference on failure of devm_kzalloc().

Fix this bug by adding a NULL check of ctx->active_fmt.

This bug was found by a static analyzer.

Builds with 'make allyesconfig' show no new warnings, and our static analyzer no longer warns about this code.

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-49254",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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      "affectedData": [
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "versionType": "git"
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            {
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              "versionType": "git"
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            {
              "status": "affected",
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          ],
          "programFiles": [
            "drivers/media/platform/ti-vpe/cal-video.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
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          "product": "Linux",
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              "status": "affected",
              "version": "5.12"
            },
            {
              "status": "unaffected",
              "version": "0",
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            },
            {
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver",
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            },
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              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
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          ],
          "programFiles": [
            "drivers/media/platform/ti-vpe/cal-video.c"
          ],
          "defaultStatus": "affected"
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      ]
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  ],
  "published": "2025-02-26T07:01:02.300",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1381f1a629a090c251965edb56f849ad648414a4",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/91e2805579ab0783eed53acc2bf9fb553e939004",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats()\n\nIn cal_ctx_v4l2_init_formats(), devm_kzalloc() is assigned to\nctx->active_fmt and there is a dereference of it after that, which could\nlead to NULL pointer dereference on failure of devm_kzalloc().\n\nFix this bug by adding a NULL check of ctx->active_fmt.\n\nThis bug was found by a static analyzer.\n\nBuilds with 'make allyesconfig' show no new warnings, and our static\nanalyzer no longer warns about this code."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: ti-vpe: cal: Se corrige una desreferencia de puntero NULL en cal_ctx_v4l2_init_formats() En cal_ctx_v4l2_init_formats(), devm_kzalloc() se asigna a ctx->active_fmt y hay una desreferencia de este después de eso, lo que podría provocar una desreferencia de puntero NULL en caso de fallo de devm_kzalloc(). Corrija este error agregando una comprobación NULL de ctx->active_fmt. Este error fue encontrado por un analizador estático. Las compilaciones con 'make allyesconfig' no muestran nuevas advertencias y nuestro analizador estático ya no advierte sobre este código."
    }
  ],
  "lastModified": "2026-06-17T05:17:31.213",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}