fkie_cve-2022-49084
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-09-23 18:33
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: qede: confirm skb is allocated before using qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL. Add a check in case build_skb() failed to allocate and return NULL. The NULL return is handled correctly in callers to qede_build_skb().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.18


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: qede: confirmar que skb est\u00e1 asignado antes de usar qede_build_skb() supone que build_skb() siempre funciona y pasa directamente a skb_reserve(). Sin embargo, build_skb() puede fallar bajo presi\u00f3n de memoria. Esto da como resultado un p\u00e1nico del kernel porque el skb a reservar es NULL. Agregue una verificaci\u00f3n en caso de que build_skb() no pueda asignar y devuelva NULL. El retorno NULL se maneja correctamente en los llamadores a qede_build_skb()."
    }
  ],
  "id": "CVE-2022-49084",
  "lastModified": "2025-09-23T18:33:20.637",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  },
  "published": "2025-02-26T07:00:45.737",
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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