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CVE Record

CVE-2022-49009: hwmon: (asus-ec-sensors) Add checks for devm_kcalloc

In the Linux kernel, the following vulnerability has been resolved: hwmon: (asus-ec-sensors) Add checks for devm_kcalloc As the devm_kcalloc may return NULL, the return value needs to be checked to avoid NULL poineter dereference.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-49009 is a Linux kernel bug in the ASUS EC hardware monitoring sensor driver. A failed memory allocation was not checked, which could cause a kernel NULL pointer dereference. Public sources do not provide CVSS, exploitation evidence, or detailed business impact.

Executive priority

Treat as routine-to-medium priority kernel hygiene. Escalate for fleets with ASUS hardware monitoring enabled or sensitive uptime requirements. There is no public evidence of active exploitation in the provided sources.

Technical view

The Linux kernel hwmon asus-ec-sensors driver called devm_kcalloc without validating a NULL return. The kernel stable commits add checks to avoid NULL pointer dereference. Affected data lists Linux kernel versions including 5.18 through fixed stable releases around 6.0.12 and 6.1, but distribution backport status must be verified separately.

Likely exposure

Most relevant to Linux systems using the asus-ec-sensors hardware monitoring driver, typically ASUS motherboard sensor support. Exposure depends on kernel version, whether the driver is present or loaded, and vendor backports. Public sources do not indicate remote exposure.

Exploitation context

No CISA KEV listing and no cited source reports active exploitation. The described failure mode is a NULL pointer dereference, most likely affecting system stability if the vulnerable code path is reached. Sources do not specify attacker prerequisites.

Researcher notes

The public record is sparse: no CVSS, CWE, exploitability notes, or distro-specific package status. Analysis should focus on kernel version lineage, stable commit inclusion, and whether the asus-ec-sensors driver is reachable on target systems.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Check Linux distribution advisories for backported fixes.
  • Prioritize systems where asus-ec-sensors is present or loaded.
  • If no package is available, follow vendor kernel guidance.

Validation and detection

  • Inventory Linux kernel versions across affected assets.
  • Check whether asus-ec-sensors exists or is loaded.
  • Review vendor kernel changelogs for the two stable commits.
  • Confirm patched kernel deployment after maintenance.
  • Monitor kernel logs for related hwmon driver faults.
Prepared
Confidence
medium
Sources
4

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2022-49009 mapping review

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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
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxd0ddfd241e5719d696bc0b081e260db69d368668, d0ddfd241e5719d696bc0b081e260db69d368668unaffected
LinuxLinux5.18, 0, 6.0.12, 6.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.