FKIE_CVE-2026-90378

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: Fix memory leak in SDIO TX path When tx_prepare_skb() returns an error in the SDIO TX path, the skb is not freed, leading to a memory leak. This can occur when zero-length frames (such as WNM NULL frames) are dropped to prevent potential hardware TX hangs. Fix this by properly releasing the skb with ieee80211_tx_status_ext() when tx_prepare_skb() fails.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/sdio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b64d196280aff8494ba6fb387e37b18479c99b83",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "9ef1351209d42b7d96604f2a13d7ea8215a24e07",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "c2c7f16f2c62f79f7c381e500afa7123580742a5",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "6a8000c76dc34490a2bb321ad1a5f882a2ccab7c",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "6a342db7a6502bc6781579145e05d4d4731786ab",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            },
            {
              "lessThan": "808f2767d4217a5b96f674288573b9b89d432eed",
              "status": "affected",
              "version": "b747fa343817fd322b4463dda99d28fc51e19c52",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/sdio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\nwifi: mt76: mt792x: Fix memory leak in SDIO TX path\n\nWhen tx_prepare_skb() returns an error in the SDIO TX path, the\nskb is not freed, leading to a memory leak. This can occur when\nzero-length frames (such as WNM NULL frames) are dropped to prevent\npotential hardware TX hangs.\n\nFix this by properly releasing the skb with ieee80211_tx_status_ext()\nwhen tx_prepare_skb() fails."
    }
  ],
  "id": "CVE-2026-90378",
  "lastModified": "2026-09-17T17:17:37.040",
  "metrics": {},
  "published": "2026-09-17T17:17:37.040",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.