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CVE Record

CVE-2026-23062: platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel crash bug in hp-bioscfg. Reading BIOS configuration attributes through sysfs, including by fwupd, could trigger a kernel panic. The provided sources describe local availability impact, not data theft, privilege escalation, or remote code execution.

Executive priority

Treat as a targeted Linux availability risk. Prioritize kernel patching for affected HP BIOS-management environments or fleets where fwupd and hardware-management tooling run automatically.

Technical view

The hp-bioscfg GET_INSTANCE_ID macro used an off-by-one loop boundary and dereferenced attr_name_kobj->name without first checking attr_name_kobj. The fault could cause null-pointer dereference or out-of-bounds access in sysfs attribute show paths such as min_length_show. The kernel fix adds the NULL check and corrects the loop condition.

Likely exposure

Likely limited to Linux systems where the hp-bioscfg driver is present and BIOS configuration sysfs attributes are read. The bundle lists Linux kernel version ranges but no distributions, appliance products, or confirmed exposed deployments.

Exploitation context

No active exploitation is stated. KEV is false in the bundle. The described trigger is fwupd reading BIOS configuration attributes, suggesting a local or system-management availability issue rather than a network-exposed attack path.

Researcher notes

Evidence is limited to the CVE record and kernel stable commits. No CVSS, CWE, exploit report, or distribution-specific advisory is included. Avoid broad claims beyond hp-bioscfg sysfs attribute access and the documented panic conditions.

Mitigation direction

  • Apply a Linux kernel update containing one of the linked stable fixes.
  • Check distribution advisories for CVE-2026-23062 backports.
  • Temporarily limit automated BIOS-attribute reads if crashes are observed.
  • Monitor vendor guidance before assuming non-listed products are affected.

Validation and detection

  • Inventory Linux systems using the hp-bioscfg driver.
  • Check kernel package changelogs for CVE-2026-23062 or linked commits.
  • Review crash logs for hp_bioscfg, min_length_show, or sysfs attribute panics.
  • Confirm fwupd or management tooling no longer triggers kernel panics after update.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
5Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux5f94f181ca25d8c5b77beb2da0cb466ddb6ece29, 5f94f181ca25d8c5b77beb2da0cb466ddb6ece29, 5f94f181ca25d8c5b77beb2da0cb466ddb6ece29, 5f94f181ca25d8c5b77beb2da0cb466ddb6ece29unaffected
LinuxLinux6.6, 0, 6.6.122, 6.12.68, 6.18.8, 6.19affected
Weakness

CWE details

No CWE listed

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