FKIE_CVE-2026-23062

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-03-13 21:28
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: platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro The GET_INSTANCE_ID macro that caused a kernel panic when accessing sysfs attributes: 1. Off-by-one error: The loop condition used '<=' instead of '<', causing access beyond array bounds. Since array indices are 0-based and go from 0 to instances_count-1, the loop should use '<'. 2. Missing NULL check: The code dereferenced attr_name_kobj->name without checking if attr_name_kobj was NULL, causing a null pointer dereference in min_length_show() and other attribute show functions. The panic occurred when fwupd tried to read BIOS configuration attributes: Oops: general protection fault [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:min_length_show+0xcf/0x1d0 [hp_bioscfg] Add a NULL check for attr_name_kobj before dereferencing and corrects the loop boundary to match the pattern used elsewhere in the driver.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/193922a23d7294085a47d7719fdb7d66ad0a236fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25150715e0b049b99df664daf05dab12f41c3e13Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb5ff1025c92117d5d1cc728bcfa294abe484da1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eba49c1dee9c5e514ca18e52c545bba524e8a045Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro\n\nThe GET_INSTANCE_ID macro that caused a kernel panic when accessing sysfs\nattributes:\n\n1. Off-by-one error: The loop condition used \u0027\u003c=\u0027 instead of \u0027\u003c\u0027,\n   causing access beyond array bounds. Since array indices are 0-based\n   and go from 0 to instances_count-1, the loop should use \u0027\u003c\u0027.\n\n2. Missing NULL check: The code dereferenced attr_name_kobj-\u003ename\n   without checking if attr_name_kobj was NULL, causing a null pointer\n   dereference in min_length_show() and other attribute show functions.\n\nThe panic occurred when fwupd tried to read BIOS configuration attributes:\n\n  Oops: general protection fault [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:min_length_show+0xcf/0x1d0 [hp_bioscfg]\n\nAdd a NULL check for attr_name_kobj before dereferencing and corrects\nthe loop boundary to match the pattern used elsewhere in the driver."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nplatform/x86: hp-bioscfg: Correcci\u00f3n de p\u00e1nico del kernel en la macro GET_INSTANCE_ID\n\nLa macro GET_INSTANCE_ID que caus\u00f3 un p\u00e1nico del kernel al acceder a los atributos de sysfs:\n\n1. Error de uno: La condici\u00f3n del bucle usaba \u0027\u0026lt;=\u0027 en lugar de \u0027\u0026lt;\u0027, causando acceso m\u00e1s all\u00e1 de los l\u00edmites del array. Dado que los \u00edndices del array est\u00e1n basados en 0 y van de 0 a instances_count-1, el bucle deber\u00eda usar \u0027\u0026lt;\u0027.\n\n2. Falta de comprobaci\u00f3n de NULL: El c\u00f3digo desreferenci\u00f3 attr_name_kobj-\u0026gt;name sin comprobar si attr_name_kobj era NULL, causando una desreferencia de puntero nulo en min_length_show() y otras funciones de visualizaci\u00f3n de atributos.\n\nEl p\u00e1nico ocurri\u00f3 cuando fwupd intent\u00f3 leer atributos de configuraci\u00f3n del BIOS:\n\n  Oops: general protection fault [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref en el rango [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:min_length_show+0xcf/0x1d0 [hp_bioscfg]\n\nA\u00f1ade una comprobaci\u00f3n de NULL para attr_name_kobj antes de desreferenciar y corrige el l\u00edmite del bucle para que coincida con el patr\u00f3n usado en otras partes del controlador."
    }
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  "id": "CVE-2026-23062",
  "lastModified": "2026-03-13T21:28:23.150",
  "metrics": {
    "cvssMetricV31": [
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        "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": "2026-02-04T17:16:16.883",
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-476"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.