CVE-2026-90369

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix out-of-bounds access in mmio copy helpers mt76_mmio_write_copy() and mt76_mmio_read_copy() iterate up to ALIGN(len, 4), so a length that is not a multiple of four reads past the source buffer (write_copy) or writes past the destination (read_copy). Copy the aligned body in the loop and handle the remaining tail through a 4-byte bounce buffer, keeping the register access width unchanged.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:36.030000

Last modified

2026-10-19 09:19:30.903000

View original CVE JSON

{
  "id": "CVE-2026-90369",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:36.030",
  "lastModified": "2026-10-19T09:19:30.903",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix out-of-bounds access in mmio copy helpers\n\nmt76_mmio_write_copy() and mt76_mmio_read_copy() iterate up to\nALIGN(len, 4), so a length that is not a multiple of four reads past the\nsource buffer (write_copy) or writes past the destination (read_copy).\nCopy the aligned body in the loop and handle the remaining tail through a\n4-byte bounce buffer, keeping the register access width unchanged."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mmio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "2df00805f7dbaa46b60c682aad0d76270b7ba266",
              "lessThan": "6ed0fba58bb125a8d8de96e391aa86111166efca",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "2df00805f7dbaa46b60c682aad0d76270b7ba266",
              "lessThan": "6689b4a65e88d7b019e687fa9d6943ca070f3e43",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mmio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6689b4a65e88d7b019e687fa9d6943ca070f3e43",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6ed0fba58bb125a8d8de96e391aa86111166efca",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}