FKIE_CVE-2026-80574

Vulnerability from fkie_nvd - Published: 2026-08-26 15:17 - Updated: 2026-08-26 15:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet Make finger2 (and also finger1) unsigned, so that if the finger index in the packet is 0 then subtracting 1 creates an array index which overflows above the existing check for FOC_MAX_FINGERS, as the existing comment says it should, instead of writing to state->fingers[-1].
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/063b4c6a6f3fc01bca085c442000c9c100fdbd93
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1842e47126816e56d30c4f856f9854fd7831066c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/296736076b3fd078742651c719555a488624023a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f6d5fe29efdf5001bc146fc292e6592cace93eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/81b07470cb2937ceb74b00be88151582a322433b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/83c265bfc084d77e2171d4b67362150ab38c935b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca92c98b806839c108995b2bbff7061515bdfb53
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/focaltech.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "063b4c6a6f3fc01bca085c442000c9c100fdbd93",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "ca92c98b806839c108995b2bbff7061515bdfb53",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "81b07470cb2937ceb74b00be88151582a322433b",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "6f6d5fe29efdf5001bc146fc292e6592cace93eb",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "83c265bfc084d77e2171d4b67362150ab38c935b",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "1842e47126816e56d30c4f856f9854fd7831066c",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            },
            {
              "lessThan": "296736076b3fd078742651c719555a488624023a",
              "status": "affected",
              "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/focaltech.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "lessThan": "4.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.266",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: focaltech - fix array out-of-bounds in focaltech_process_rel_packet\n\nMake finger2 (and also finger1) unsigned, so that if the finger index in\nthe packet is 0 then subtracting 1 creates an array index which overflows\nabove the existing check for FOC_MAX_FINGERS, as the existing comment says\nit should, instead of writing to state-\u003efingers[-1]."
    }
  ],
  "id": "CVE-2026-80574",
  "lastModified": "2026-08-26T15:17:13.393",
  "metrics": {},
  "published": "2026-08-26T15:17:13.393",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/063b4c6a6f3fc01bca085c442000c9c100fdbd93"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1842e47126816e56d30c4f856f9854fd7831066c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/296736076b3fd078742651c719555a488624023a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f6d5fe29efdf5001bc146fc292e6592cace93eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/81b07470cb2937ceb74b00be88151582a322433b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/83c265bfc084d77e2171d4b67362150ab38c935b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ca92c98b806839c108995b2bbff7061515bdfb53"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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