FKIE_CVE-2022-2601

Vulnerability from fkie_nvd - Published: 2022-12-14 21:15 - Updated: 2026-06-17 04:42
Severity
8.6 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.6 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202311-14
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20230203-0004/
af854a3a-2127-422b-91ae-364da2661108https://arstechnica.com/security/2024/08/a-patch-microsoft-spent-2-years-preparing-is-making-a-mess-for-some-linux-users/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202311-14
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230203-0004/
Impacted products
Vendor Product Version
gnu grub2 *
fedoraproject fedora 37
redhat enterprise_linux_eus 9.0
redhat enterprise_linux_for_power_little_endian_eus 9.0
redhat enterprise_linux_server_aus 8.2
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.1
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 9.0
redhat enterprise_linux_server_tus 8.2
redhat enterprise_linux_server_update_services_for_sap_solutions 8.1
redhat enterprise_linux_server_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_update_services_for_sap_solutions 9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "grub2",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "grub2 2.06 and lower"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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  "cveTags": [],
  "descriptions": [
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      "value": "A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 un desbordamiento del b\u00fafer en grub_font_construct_glyph(). Una fuente pf2 manipulada maliciosamente puede provocar un desbordamiento al calcular el valor max_glyph_size, asignando un b\u00fafer m\u00e1s peque\u00f1o de lo necesario para el glifo, lo que adem\u00e1s provoca un desbordamiento del b\u00fafer y una escritura fuera de los l\u00edmites basada en el heap. Un atacante puede utilizar esta vulnerabilidad para eludir el mecanismo de arranque seguro."
    }
  ],
  "id": "CVE-2022-2601",
  "lastModified": "2026-06-17T04:42:11.660",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
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        "impactScore": 6.0,
        "source": "nvd@nist.gov",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
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        "ssvcData": {
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          "options": [
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            },
            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
          "timestamp": "2025-05-20T15:43:38.484246Z",
          "version": "2.0.3"
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  "published": "2022-12-14T21:15:10.190",
  "references": [
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  "vulnStatus": "Modified",
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}



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