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FKIE_CVE-2026-80605

Vulnerability from fkie_nvd - Published: 2026-08-28 08:16 - Updated: 2026-08-28 08:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait() In picolcd_send_and_wait(), an integer overflow of the signed loop counter 'k' can theoretically lead to a NULL pointer dereference of 'raw_data'. If the loop executes more than INT_MAX times, 'k' becomes negative, making the condition 'k < size' true even when 'size' is 0. Change the type of 'k' to 'unsigned int' to prevent the overflow and eliminate the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool. [jkosina@suse.com: extended hash length]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0021eb09041f021c079be1022934a280f7f176c0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42dc0b7b55fe0499fc09183f34a1c46d1dcccf77
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48caee2c106b03301c72fe389ebff00d852c58d5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a02d5d7ad7ae5fa3756b8332f7350e973085dcb3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d354e523c6f740db758cafcd4c11bb7913285ed8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc176447c7279435c46735db7da81aed1ec25cc2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef649703dce0df1364fcec3cdad9b32d1c522939
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-picolcd_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "42dc0b7b55fe0499fc09183f34a1c46d1dcccf77",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "48caee2c106b03301c72fe389ebff00d852c58d5",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "dc176447c7279435c46735db7da81aed1ec25cc2",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "a02d5d7ad7ae5fa3756b8332f7350e973085dcb3",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "d354e523c6f740db758cafcd4c11bb7913285ed8",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "ef649703dce0df1364fcec3cdad9b32d1c522939",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            },
            {
              "lessThan": "0021eb09041f021c079be1022934a280f7f176c0",
              "status": "affected",
              "version": "fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-picolcd_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.7"
            },
            {
              "lessThan": "3.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "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\nHID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()\n\nIn picolcd_send_and_wait(), an integer overflow of the signed loop counter\n\u0027k\u0027 can theoretically lead to a NULL pointer dereference of \u0027raw_data\u0027.\nIf the loop executes more than INT_MAX times, \u0027k\u0027 becomes negative,\nmaking the condition \u0027k \u003c size\u0027 true even when \u0027size\u0027 is 0.\n\nChange the type of \u0027k\u0027 to \u0027unsigned int\u0027 to prevent the overflow and\neliminate the out-of-bounds access.\n\nFound by Linux Verification Center (linuxtesting.org) with the Svace static\nanalysis tool.\n\n[jkosina@suse.com: extended hash length]"
    }
  ],
  "id": "CVE-2026-80605",
  "lastModified": "2026-08-28T08:16:44.450",
  "metrics": {},
  "published": "2026-08-28T08:16:44.450",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0021eb09041f021c079be1022934a280f7f176c0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/42dc0b7b55fe0499fc09183f34a1c46d1dcccf77"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/48caee2c106b03301c72fe389ebff00d852c58d5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a02d5d7ad7ae5fa3756b8332f7350e973085dcb3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d354e523c6f740db758cafcd4c11bb7913285ed8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dc176447c7279435c46735db7da81aed1ec25cc2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ef649703dce0df1364fcec3cdad9b32d1c522939"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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