CVE-2025-68288 (GCVE-0-2025-68288)
Vulnerability from cvelistv5
Published
2025-12-16 15:06
Modified
2025-12-16 15:06
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: storage: Fix memory leak in USB bulk transport A kernel memory leak was identified by the 'ioctl_sg01' test from Linux Test Project (LTP). The following bytes were mainly observed: 0x53425355. When USB storage devices incorrectly skip the data phase with status data, the code extracts/validates the CSW from the sg buffer, but fails to clear it afterwards. This leaves status protocol data in srb's transfer buffer, such as the US_BULK_CS_SIGN 'USBS' signature observed here. Thus, this can lead to USB protocols leaks to user space through SCSI generic (/dev/sg*) interfaces, such as the one seen here when the LTP test requested 512 KiB. Fix the leak by zeroing the CSW data in srb's transfer buffer immediately after the validation of devices that skip data phase. Note: Differently from CVE-2018-1000204, which fixed a big leak by zero- ing pages at allocation time, this leak occurs after allocation, when USB protocol data is written to already-allocated sg pages.
References
Impacted products
Vendor Product Version
Linux Linux Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: a45b599ad808c3c982fdcdc12b0b8611c2f92824
Version: 582802e7c617cfb07cc15f280c128e6decbc57b8
Version: 58b7ce6f9ef2367f86384b20458642945993b816
Version: 93314640426ddb6af618d0802e622f6fa771792c
Version: ad2518320bc440ed3db072e2444a1bb226a9cf7a
Version: d827bea2d18c07ba514f7d48cde49f90da9a1384
Version: 39169410574503c6e901de1aa6eac5108475e017
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/storage/transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "83f0241959831586d9b6d47f6bd5d3dec8f43bf0",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "4ba515dfff7eeca369ab85cdbb3f3b231c71720c",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "467fec3cefbeb9e3ea80f457da9a5666a71ca0d0",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "cb1401b5bcc2feb5b038fc4b512e5968b016e05e",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "0f18eac44c5668204bf6eebb01ddb369ac56932b",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "5b815ddb3f5560fac35b16de3a2a22d5f81c5993",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "lessThan": "41e99fe2005182139b1058db71f0d241f8f0078c",
              "status": "affected",
              "version": "a45b599ad808c3c982fdcdc12b0b8611c2f92824",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "582802e7c617cfb07cc15f280c128e6decbc57b8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "58b7ce6f9ef2367f86384b20458642945993b816",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93314640426ddb6af618d0802e622f6fa771792c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad2518320bc440ed3db072e2444a1bb226a9cf7a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d827bea2d18c07ba514f7d48cde49f90da9a1384",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "39169410574503c6e901de1aa6eac5108475e017",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/storage/transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.17"
            },
            {
              "lessThan": "4.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.247",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.197",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.159",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.119",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.61",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.11",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.58",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.18.110",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.133",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.9.103",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.44",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.16.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: storage: Fix memory leak in USB bulk transport\n\nA kernel memory leak was identified by the \u0027ioctl_sg01\u0027 test from Linux\nTest Project (LTP). The following bytes were mainly observed: 0x53425355.\n\nWhen USB storage devices incorrectly skip the data phase with status data,\nthe code extracts/validates the CSW from the sg buffer, but fails to clear\nit afterwards. This leaves status protocol data in srb\u0027s transfer buffer,\nsuch as the US_BULK_CS_SIGN \u0027USBS\u0027 signature observed here. Thus, this can\nlead to USB protocols leaks to user space through SCSI generic (/dev/sg*)\ninterfaces, such as the one seen here when the LTP test requested 512 KiB.\n\nFix the leak by zeroing the CSW data in srb\u0027s transfer buffer immediately\nafter the validation of devices that skip data phase.\n\nNote: Differently from CVE-2018-1000204, which fixed a big leak by zero-\ning pages at allocation time, this leak occurs after allocation, when USB\nprotocol data is written to already-allocated sg pages."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T15:06:09.654Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/83f0241959831586d9b6d47f6bd5d3dec8f43bf0"
        },
        {
          "url": "https://git.kernel.org/stable/c/4ba515dfff7eeca369ab85cdbb3f3b231c71720c"
        },
        {
          "url": "https://git.kernel.org/stable/c/467fec3cefbeb9e3ea80f457da9a5666a71ca0d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb1401b5bcc2feb5b038fc4b512e5968b016e05e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f18eac44c5668204bf6eebb01ddb369ac56932b"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b815ddb3f5560fac35b16de3a2a22d5f81c5993"
        },
        {
          "url": "https://git.kernel.org/stable/c/41e99fe2005182139b1058db71f0d241f8f0078c"
        }
      ],
      "title": "usb: storage: Fix memory leak in USB bulk transport",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68288",
    "datePublished": "2025-12-16T15:06:09.654Z",
    "dateReserved": "2025-12-16T14:48:05.292Z",
    "dateUpdated": "2025-12-16T15:06:09.654Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68288\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:07.620\",\"lastModified\":\"2025-12-18T15:08:06.237\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: storage: Fix memory leak in USB bulk transport\\n\\nA kernel memory leak was identified by the \u0027ioctl_sg01\u0027 test from Linux\\nTest Project (LTP). The following bytes were mainly observed: 0x53425355.\\n\\nWhen USB storage devices incorrectly skip the data phase with status data,\\nthe code extracts/validates the CSW from the sg buffer, but fails to clear\\nit afterwards. This leaves status protocol data in srb\u0027s transfer buffer,\\nsuch as the US_BULK_CS_SIGN \u0027USBS\u0027 signature observed here. Thus, this can\\nlead to USB protocols leaks to user space through SCSI generic (/dev/sg*)\\ninterfaces, such as the one seen here when the LTP test requested 512 KiB.\\n\\nFix the leak by zeroing the CSW data in srb\u0027s transfer buffer immediately\\nafter the validation of devices that skip data phase.\\n\\nNote: Differently from CVE-2018-1000204, which fixed a big leak by zero-\\ning pages at allocation time, this leak occurs after allocation, when USB\\nprotocol data is written to already-allocated sg pages.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f18eac44c5668204bf6eebb01ddb369ac56932b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/41e99fe2005182139b1058db71f0d241f8f0078c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/467fec3cefbeb9e3ea80f457da9a5666a71ca0d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4ba515dfff7eeca369ab85cdbb3f3b231c71720c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b815ddb3f5560fac35b16de3a2a22d5f81c5993\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/83f0241959831586d9b6d47f6bd5d3dec8f43bf0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cb1401b5bcc2feb5b038fc4b512e5968b016e05e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.