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CVE Record

CVE-2026-43355: iio: light: bh1780: fix PM runtime leak on error path

In the Linux kernel, the following vulnerability has been resolved: iio: light: bh1780: fix PM runtime leak on error path Move pm_runtime_put_autosuspend() before the error check to ensure the PM runtime reference count is always decremented after pm_runtime_get_sync(), regardless of whether the read operation succeeds or fails.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2026-43355 is a Linux kernel bug in the BH1780 light sensor driver. A failed sensor read can leave a power-management reference unreleased. The public record does not provide CVSS, confirmed impact, or exploitation evidence. Business urgency depends on whether your Linux devices use this specific sensor driver and affected kernel builds.

Executive priority

Treat as targeted kernel maintenance, not an emergency, unless your products use this sensor driver. Ask platform owners to confirm exposure and roll the vendor-supported kernel fix into normal patch cycles. Escalate priority for embedded devices where power-management failures affect reliability.

Technical view

The issue is in the Linux IIO light driver bh1780. The fix moves pm_runtime_put_autosuspend() before the error check so pm_runtime_get_sync() is balanced whether the read succeeds or fails. This addresses a PM runtime reference leak on an error path. The CVE record lists Linux kernel affected versions and stable kernel commit references.

Likely exposure

Exposure is likely limited to Linux systems with the bh1780 IIO light sensor driver in use on affected kernel versions. Servers and cloud workloads without this hardware or driver are less likely to be exposed. Vendor backports may change apparent version exposure, so distribution-specific kernel advisories should be checked.

Exploitation context

No active exploitation is indicated in the provided sources, and the CVE is not marked KEV. The sources describe a kernel bug fix, not a public exploit. Practical impact is unclear from the record, but the flaw concerns resource accounting in a hardware driver error path.

Researcher notes

The record lacks CVSS, CWE, exploitability details, and concrete impact beyond a PM runtime leak. Analysis should focus on reachable read error paths in bh1780 and distribution backport status. Avoid assuming broader Linux exposure without confirming driver presence and hardware relevance.

Mitigation direction

  • Update to a vendor kernel containing the linked stable fixes.
  • Check your Linux distribution advisory for backported fixes.
  • Prioritize embedded or hardware platforms using the BH1780 sensor.
  • If no vendor fix is available, monitor vendor kernel guidance.

Validation and detection

  • Inventory Linux kernel versions across affected device fleets.
  • Determine whether the bh1780 driver is present or enabled.
  • Confirm whether linked stable commits are included in your kernel.
  • Review vendor changelogs for CVE-2026-43355 backports.
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

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-2026-43355 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
0ADP providers
9Source 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
LinuxLinux1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76, 1f0477f18306c018a954e4f333690a9d0f7efc76unaffected
LinuxLinux4.7, 0, 5.10.253, 5.15.211, 6.1.167, 6.6.130, 6.12.95, 6.18.19, 6.19.9, 7.0affected
Weakness

CWE details

No CWE listed

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