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Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet

Type: advisorySource: Official CVE List1 source record

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].

Announced Source revision 1
Original source ↗

CVE-2026-80574

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-80574

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "063b4c6a6f3fc01bca085c442000c9c100fdbd93",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "ca92c98b806839c108995b2bbff7061515bdfb53",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "81b07470cb2937ceb74b00be88151582a322433b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "6f6d5fe29efdf5001bc146fc292e6592cace93eb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "83c265bfc084d77e2171d4b67362150ab38c935b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "1842e47126816e56d30c4f856f9854fd7831066c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "05be1d079ec0b3691783e4384b1ada82149ff7d2",
        "lessThan": "296736076b3fd078742651c719555a488624023a",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/input/mouse/focaltech.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.0"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.266",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.217",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.184",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.153",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.105",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.46",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/input/mouse/focaltech.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80574

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34328 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement