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CVE-2026-93165 high CVSS 7.7

Vulnerability in Linux kernel (CVE-2026-93165)

Summary

Vulnerability in Linux kernel (CVE-2026-93165). Confidential information can be exposed externally. Exploitable via max_response.

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

platform/chrome: sensorhub: Fix memory overread in ring handler

max_response and sensor_num are read from different EC commands:

  • max_response is from cros_ec_get_proto_info().
    ec_dev->max_response = info->max_response_packet_size -
    sizeof(struct ec_host_response);

  • sensor_num is from cros_ec_get_sensor_count().
    sensor_num = cros_ec_get_sensor_count(ec);

With a malfunctioning EC firmware, it is possible that the msg->insize
(i.e., fifo_info_length in the context) could be clamped in
cros_ec_cmd_xfer() because msg->insize is greater than max_response.

int fifo_info_length =
        sizeof(struct ec_response_motion_sense_fifo_info) +
        sizeof(u16) * sensorhub->sensor_num;

This means the number of read bytes could be less than expected. As a
result, the subsequent memcpy() in cros_ec_sensorhub_ring_handler()
overreads the resp->fifo_info buffer.

Check the return value of cros_ec_cmd_xfer_status() and abort if the
number of bytes read does not match the expected length.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-93165 has been found in Linux kernel.
Attackers can target a specific entry point like max_response over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 7.7/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2026-93165" on the vendor's site.

CVE-2026-93165 (Linux kernel) — CVSS v3 7.7
Attack vector: local / unauthenticated / no user interaction
Attack surface: max_response / sensor_num / fifo_info_length
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Linux kernel. Attackers reach the vulnerable code path via max_response without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of Linux kernel. Attack surface: max_response / sensor_num / fifo_info_length.

🔥 Severity

Severity: High (CVSS 7.7/10). Confidential information can be exposed externally.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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