Vulnerability-Lookup

GHSA-4VX6-QJMC-QF63

Vulnerability from github – Published: 2026-01-14 15:33 – Updated: 2026-03-25 18:31

Details

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

media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()

It's possible for cp_read() and hdmi_read() to return -EIO. Those values are further used as indexes for accessing arrays.

Fix that by checking return values where it's needed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-71136"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-14T15:16:03Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()\n\nIt\u0027s possible for cp_read() and hdmi_read() to return -EIO. Those\nvalues are further used as indexes for accessing arrays.\n\nFix that by checking return values where it\u0027s needed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.",
  "id": "GHSA-4vx6-qjmc-qf63",
  "modified": "2026-03-25T18:31:34Z",
  "published": "2026-01-14T15:33:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71136"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60dde0960e3ead8a9569f6c494d90d0232ac0983"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8163419e3e05d71dcfa8fb49c8fdf8d76908fe51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a73881ae085db5702d8b13e2fc9f78d51c723d3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b693d48a6ed0cd09171103ad418e4a693203d6e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6a22a4a96e4dfe6897cb3532d2b3016d87706f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f81ee181cb036d046340c213091b69d9a8701a76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f913b9a2ccd6114b206b9e91dae5e3dc13a415a0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-71136 (GCVE-0-2025-71136)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:07 – Updated: 2026-08-05 12:12

Title

media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()

Summary

In the Linux kernel, the following vulnerability has been resolved: media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() It's possible for cp_read() and hdmi_read() to return -EIO. Those values are further used as indexes for accessing arrays. Fix that by checking return values where it's needed. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/f81ee181cb036d046…
https://git.kernel.org/stable/c/f913b9a2ccd6114b2…
https://git.kernel.org/stable/c/d6a22a4a96e4dfe68…
https://git.kernel.org/stable/c/a73881ae085db5702…
https://git.kernel.org/stable/c/60dde0960e3ead8a9…
https://git.kernel.org/stable/c/b693d48a6ed0cd091…
https://git.kernel.org/stable/c/8163419e3e05d71dc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < f81ee181cb036d046340c213091b69d9a8701a76 (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < f913b9a2ccd6114b206b9e91dae5e3dc13a415a0 (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < d6a22a4a96e4dfe6897cb3532d2b3016d87706f0 (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < a73881ae085db5702d8b13e2fc9f78d51c723d3f (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < 60dde0960e3ead8a9569f6c494d90d0232ac0983 (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < b693d48a6ed0cd09171103ad418e4a693203d6e4 (git) Affected: a89bcd4c6c2023615a89001b5a11b0bb77eb9491 , < 8163419e3e05d71dcfa8fb49c8fdf8d76908fe51 (git)
Linux	Linux	Affected: 3.12 Unaffected: 0 , < 3.12 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.4 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/i2c/adv7842.c"
          ],
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              "version": "3.12"
            },
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              "status": "unaffected",
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      "cpeApplicability": [
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()\n\nIt\u0027s possible for cp_read() and hdmi_read() to return -EIO. Those\nvalues are further used as indexes for accessing arrays.\n\nFix that by checking return values where it\u0027s needed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
        }
      ],
      "metrics": [
        {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - A local attacker reaches the flaw through VIDIOC_LOG_STATUS on the Cobalt /dev/video or exposed V4L2 subdevice node, which forwards directly to adv7842_cp_log_status(). An HDMI source cannot independently invoke this callback.\nAC:L - Once an I2C read returns -EIO, shifting the result produces index -1 and one status ioctl deterministically triggers the under-read. The ioctl can be repeated during transient or persistent bus faults, with no race or heap grooming required.\nPR:L - The ioctl path contains no capability or administrative privilege check. An unprivileged user or service with ordinary video-device access can invoke it.\nUI:N - The attacker directly issues the ioctl and does not require another user to open media, approve a request, or perform any other action.\nS:U - The vulnerable driver and the affected kernel memory belong to the same host security authority. No guest-host, IOMMU, or other scope boundary is crossed.\nC:H - The index under-read obtains a pointer-sized value preceding a static array, which printk then follows as a string pointer until a NUL byte. This is not a strictly bounded small read and can expose kernel memory through the log.\nI:N - The vulnerable operations only read outside static pointer arrays and pass the resulting values to logging code. They provide no memory-write or control-flow modification primitive.\nA:H - If the preceding word is not a valid NUL-terminated kernel pointer, printk\u0027s %s handling can fault and cause a kernel oops. Systems configured with panic-on-oops can consequently panic or reboot."
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        },
        {
          "url": "https://git.kernel.org/stable/c/b693d48a6ed0cd09171103ad418e4a693203d6e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/8163419e3e05d71dcfa8fb49c8fdf8d76908fe51"
        }
      ],
      "title": "media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71136",
    "datePublished": "2026-01-14T15:07:50.568Z",
    "dateReserved": "2026-01-13T15:30:19.656Z",
    "dateUpdated": "2026-08-05T12:12:18.759Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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