CVE-2026-98755 (GCVE-0-2026-98755)
Vulnerability from cvelistv5
Published
2026-10-18 15:47
Modified
2026-10-30 12:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: vcc: zero-initialize control packet in vcc_send_ctl() The stack-allocated struct vio_vcc pkt was partially initialized, leaving the tag.stype_env field uninitialized before being sent via ldc_write(), potentially leaking kernel stack data to the LDC peer.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
Version: 8868e44a56160328cd4003d95f4083f64b136e33
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/vcc.c"
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vcc: zero-initialize control packet in vcc_send_ctl()\n\nThe stack-allocated struct vio_vcc pkt was partially initialized,\nleaving the tag.stype_env field uninitialized before being sent via\nldc_write(), potentially leaking kernel stack data to the LDC peer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:39:25.859Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9e2eedb3611c1a3a377105cb26af52731e826fa5"
        },
        {
          "url": "https://git.kernel.org/stable/c/360111628a968ebc8e6da400b28f23ae317d4e04"
        },
        {
          "url": "https://git.kernel.org/stable/c/639178bc8e77aad307a9ee5e62471c5dcc8dda67"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b59afc8af3143ae03e4f9b81ca66aa5a1c1ebed"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f1a08ef02825b440126c406ea63ef6128888e15"
        },
        {
          "url": "https://git.kernel.org/stable/c/4335278d0e75395cbfaf71c84b521df56d69e936"
        },
        {
          "url": "https://git.kernel.org/stable/c/399aa38af1d78001612e3130b2056ea392a355ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f71f565e3585da1098ff19ca3c24687dab59185"
        }
      ],
      "title": "tty: vcc: zero-initialize control packet in vcc_send_ctl()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98755",
    "datePublished": "2026-10-18T15:47:41.106Z",
    "dateReserved": "2026-09-25T10:25:14.368Z",
    "dateUpdated": "2026-10-30T12:39:25.859Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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