peci: cpu: Fix use-after-free in adev_release()

Answer in brief

CVE-2022-48670 records a High severity (CVSS 7.8) vulnerability in peci: cpu: Fix use-after-free in adev_release(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 3, 2024Updated Aug 13, 2026Source checked Sep 27, 2026First seen by HOL Aug 13, 2026Material review Aug 13, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 7 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.0:rc1::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.0:rc2::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=93e1821c80f9460c8931dc4bc090ede794f966cd <c87f1f99e26ea4ae08cabe753ae98e5626bdba89 \|\| >=93e1821c80f9460c8931dc4bc090ede794f966cd <1c11289b34ab67ed080bbe0f1855c4938362d9cf	c87f1f99e26ea4ae08cabe753ae98e5626bdba89, 1c11289b34ab67ed080bbe0f1855c4938362d9cf
Linux/Linuxgeneric	5.18	Not reported
linux/linux_kernelgeneric	-1da177e4c3f4	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, linux/linux_kernel.
Review the reported fix. Update Linux/Linux to c87f1f99e26ea4ae08cabe753ae98e5626bdba89 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 3, 2024
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 13, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: peci: cpu: Fix use-after-free in adev_release() When auxiliary_device_add() returns an error, auxiliary_device_uninit() is called, which causes refcount for device to be decremented and .release callback will be triggered. Because adev_release() re-calls auxiliary_device_uninit(), it will cause use-after-free: [ 1269.455172] WARNING: CPU: 0 PID: 14267 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15 [ 1269.464007] refcount_t: underflow; use-after-free.

Quoted source text, attributed separately from HOL analysis.