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CVE Record

CVE-2022-49032: iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw

In the Linux kernel, the following vulnerability has been resolved: iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw KASAN report out-of-bounds read as follows: BUG: KASAN: global-out-of-bounds in afe4404_read_raw+0x2ce/0x380 Read of size 4 at addr ffffffffc00e4658 by task cat/278 Call Trace: afe4404_read_raw iio_read_channel_info dev_attr_show The buggy address belongs to the variable: afe4404_channel_leds+0x18/0xffffffffffffe9c0 This issue can be reproduce by singe command: $ cat /sys/bus/i2c/devices/0-0058/iio\:device0/in_intensity6_raw The array size of afe4404_channel_leds and afe4404_channel_offdacs are less than channels, so access with chan->address cause OOB read in afe4404_[read|write]_raw. Fix it by moving access before use them.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-49032 is a Linux kernel bug in the AFE4404 health-sensor driver. A local user with access to the relevant IIO sensor interface could trigger an out-of-bounds kernel memory read. The sources do not provide CVSS scoring, impact beyond the KASAN report, or evidence of active exploitation.

Executive priority

Treat as a targeted kernel maintenance issue, not an internet-wide emergency. Prioritize patch validation for embedded, medical, wearable, or hardware-control environments using AFE4404 sensors. Broader enterprise urgency depends on whether the affected driver is present.

Technical view

The bug is in afe4404_read_raw and afe4404_write_raw. The driver indexed afe4404_channel_leds and afe4404_channel_offdacs with chan->address even though those arrays are smaller than the channel set. The kernel stable fixes move access before unsafe use, preventing the out-of-bounds read.

Likely exposure

Exposure is likely limited to Linux systems using or enabling the AFE4404 IIO health sensor driver, especially embedded or hardware-integrated deployments. Generic servers without that driver or device are less likely exposed, but the source bundle does not define distribution-level package status.

Exploitation context

The public record includes a local reproduction through a sysfs IIO sensor attribute and a KASAN out-of-bounds read report. KEV is false, and the supplied sources do not show active exploitation, public weaponization, privilege escalation, or remote attack paths.

Researcher notes

Key unknowns are impact severity, reachable deployments, and whether the out-of-bounds read leaks meaningful data or only triggers diagnostics. The CVE record supplies stable commit references but no CVSS, CWE, exploit activity, or distro-specific fixed package versions.

Mitigation direction

  • Update affected Linux kernels to builds containing the referenced stable fixes.
  • Check distribution or device-vendor advisories for supported kernel backports.
  • Prioritize systems with AFE4404 hardware or the AFE4404 IIO driver enabled.
  • Avoid assuming nonstandard mitigations unless vendor guidance names them.

Validation and detection

  • Inventory kernel versions against the affected version list in the CVE record.
  • Confirm whether the AFE4404 IIO health sensor driver is enabled or loaded.
  • Review kernel package changelogs for the referenced AFE4404 fix title.
  • Map embedded devices and appliances that ship custom Linux kernels.
Prepared
Confidence
medium
Sources
10

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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CVE-2022-49032 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
9Source 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
LinuxLinuxb36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376c, b36e8257641a043764c62240316610c81e36376cunaffected
LinuxLinux4.8, 0, 4.9.335, 4.14.301, 4.19.268, 5.4.226, 5.10.158, 5.15.82, 6.0.12, 6.1affected
Weakness

CWE details

No CWE listed

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