FKIE_CVE-2026-63961

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-07-20 07:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: validate count before reading Status Update VDO A broken/malicious device can send the incorrect count for a status update VDO, which will cause the kernel to read uninitialized stack data and send it off elsewhere. Fix this up by correctly verifying the count for the update object.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64bd6ccc5799f8473d1f37d4d8f53093dfec5c02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ffdbcd7a02f3af8fff9b6519830369f574ed44c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70e7045849e954e56dcbf441b6330e66bc996306
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74aabe9ea30fdfba924fce9594e6aa69a596a4bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77a759ec30bc5fb0dd9c867b711d0acfed6c7faa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a18f896e667df491331371b55d4ad644dc51d60
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd7118c010f324497c275e8fd7a35c9baaa2a00f
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/altmodes/displayport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "74aabe9ea30fdfba924fce9594e6aa69a596a4bb",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "dd7118c010f324497c275e8fd7a35c9baaa2a00f",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "6ffdbcd7a02f3af8fff9b6519830369f574ed44c",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "70e7045849e954e56dcbf441b6330e66bc996306",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "64bd6ccc5799f8473d1f37d4d8f53093dfec5c02",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9b",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "77a759ec30bc5fb0dd9c867b711d0acfed6c7faa",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            },
            {
              "lessThan": "8a18f896e667df491331371b55d4ad644dc51d60",
              "status": "affected",
              "version": "0e3bb7d6894d9b6e67d6382bb03a46a1dc989588",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/altmodes/displayport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nusb: typec: altmodes/displayport: validate count before reading Status Update VDO\n\nA broken/malicious device can send the incorrect count for a status\nupdate VDO, which will cause the kernel to read uninitialized stack data\nand send it off elsewhere.\n\nFix this up by correctly verifying the count for the update object."
    }
  ],
  "id": "CVE-2026-63961",
  "lastModified": "2026-07-20T07:16:41.303",
  "metrics": {},
  "published": "2026-07-19T16:17:15.033",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/64bd6ccc5799f8473d1f37d4d8f53093dfec5c02"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ffdbcd7a02f3af8fff9b6519830369f574ed44c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/70e7045849e954e56dcbf441b6330e66bc996306"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74aabe9ea30fdfba924fce9594e6aa69a596a4bb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/77a759ec30bc5fb0dd9c867b711d0acfed6c7faa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8a18f896e667df491331371b55d4ad644dc51d60"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd7118c010f324497c275e8fd7a35c9baaa2a00f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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