GHSA-5VJ7-8HH8-CPCC
Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-03-13 21:31In 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:
-
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 '<'.
-
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.
{
"affected": [],
"aliases": [
"CVE-2026-23062"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-04T17:16:16Z",
"severity": "MODERATE"
},
"details": "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.",
"id": "GHSA-5vj7-8hh8-cpcc",
"modified": "2026-03-13T21:31:40Z",
"published": "2026-02-04T18:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23062"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/193922a23d7294085a47d7719fdb7d66ad0a236f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/25150715e0b049b99df664daf05dab12f41c3e13"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb5ff1025c92117d5d1cc728bcfa294abe484da1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eba49c1dee9c5e514ca18e52c545bba524e8a045"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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