FKIE_CVE-2026-74642

Vulnerability from fkie_nvd - Published: 2026-08-22 16:16 - Updated: 2026-08-22 16:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: Fix UAF at delayed release of MIDI2 EPs The recent fix for UAF in ump_to_endpoint() caused another UAF because it tries to dereference the UMP endpoint object, but this might be executed at a delayed context where the endpoint has been already released. Add private_free to clear the associated data for avoiding the further dereference for delayed releases.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d431941825d357be7d9ab0cb7505e3a1963bd89e",
              "status": "affected",
              "version": "49eccef6d6e1c00dac6fb2e7eb6f9206c33e1c37",
              "versionType": "git"
            },
            {
              "lessThan": "422d8a02de5ce6a29d616d55e5ead5dec69ac1d7",
              "status": "affected",
              "version": "8a7a33b846d6ba695891b8d0040027cdbad8cd52",
              "versionType": "git"
            },
            {
              "lessThan": "d217d723c5e43881b952cdb978477f7f2dc0b6d7",
              "status": "affected",
              "version": "cc014ebf803174f0e5d15956dfc5a38413c945ae",
              "versionType": "git"
            },
            {
              "lessThan": "f9d492a39ebeb1a56f13ec6dd165a18a48dec812",
              "status": "affected",
              "version": "ae388c0e1bf727972096f770f82d12e4f748d1b6",
              "versionType": "git"
            },
            {
              "lessThan": "f8a80cfb68613fb7e6452b66447dbc63f435d140",
              "status": "affected",
              "version": "4a05b2d1b4642df74f30b6f54843e825c4a2bfd3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.6.152",
              "status": "affected",
              "version": "6.6.151",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.104",
              "status": "affected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.45",
              "status": "affected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThan": "7.1.9",
              "status": "affected",
              "version": "7.1.8",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb: Fix UAF at delayed release of MIDI2 EPs\n\nThe recent fix for UAF in ump_to_endpoint() caused another UAF because\nit tries to dereference the UMP endpoint object, but this might be\nexecuted at a delayed context where the endpoint has been already\nreleased.\n\nAdd private_free to clear the associated data for avoiding the further\ndereference for delayed releases."
    }
  ],
  "id": "CVE-2026-74642",
  "lastModified": "2026-08-22T16:16:37.513",
  "metrics": {},
  "published": "2026-08-22T16:16:37.513",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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