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FKIE_CVE-2026-74457

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-19 17:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: add bounds check for USB channel index The channel control index ctrl_idx is derived from rx->len which comes directly from a device USB payload. The mask 0x0f allows values 0-15, but the array size of usb_if->dev[] is only 2. Values 2-15 cause heap out-of-bounds read, eventually causing kernel panic in the IRQ context. Add bounds checking for ctrl_idx before the array access in both pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0149fdb50a30944827acf9600a2cc44de0325a7f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c9268457bd6e4058fe55b4db01b16661c2eacf5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18b1a868a2cda66fb438007ba47ce5f2484db381
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1acab790b7cecd4e144d1d18bdfe549e282f6b0b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39132f166ca8ce00ae60d8a9068e06a60943cc4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94fb6fe83ce152532b11b36730b30f3dc0c94217
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f97b7e5e1cdaae15cd95b3a360028c7929664969
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/peak_usb/pcan_usb_pro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18b1a868a2cda66fb438007ba47ce5f2484db381",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "0c9268457bd6e4058fe55b4db01b16661c2eacf5",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "94fb6fe83ce152532b11b36730b30f3dc0c94217",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "f97b7e5e1cdaae15cd95b3a360028c7929664969",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "1acab790b7cecd4e144d1d18bdfe549e282f6b0b",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "0149fdb50a30944827acf9600a2cc44de0325a7f",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            },
            {
              "lessThan": "39132f166ca8ce00ae60d8a9068e06a60943cc4b",
              "status": "affected",
              "version": "d8a199355f8f8a0797c00d98788d7282c9ea38bd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/peak_usb/pcan_usb_pro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.4"
            },
            {
              "lessThan": "3.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "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\ncan: peak_usb: add bounds check for USB channel index\n\nThe channel control index ctrl_idx is derived from rx-\u003elen which comes\ndirectly from a device USB payload. The mask 0x0f allows values 0-15, but\nthe array size of usb_if-\u003edev[] is only 2. Values 2-15 cause heap\nout-of-bounds read, eventually causing kernel panic in the IRQ context.\n\nAdd bounds checking for ctrl_idx before the array access in both\npcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error()."
    }
  ],
  "id": "CVE-2026-74457",
  "lastModified": "2026-08-19T17:21:02.533",
  "metrics": {},
  "published": "2026-08-15T13:17:50.333",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0149fdb50a30944827acf9600a2cc44de0325a7f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c9268457bd6e4058fe55b4db01b16661c2eacf5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/18b1a868a2cda66fb438007ba47ce5f2484db381"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1acab790b7cecd4e144d1d18bdfe549e282f6b0b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/39132f166ca8ce00ae60d8a9068e06a60943cc4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/94fb6fe83ce152532b11b36730b30f3dc0c94217"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f97b7e5e1cdaae15cd95b3a360028c7929664969"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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