CVE-2023-54209 (GCVE-0-2023-54209)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2025-12-30 12:11
VLAI?
Title
block: fix blktrace debugfs entries leakage
Summary
In the Linux kernel, the following vulnerability has been resolved: block: fix blktrace debugfs entries leakage Commit 99d055b4fd4b ("block: remove per-disk debugfs files in blk_unregister_queue") moves blk_trace_shutdown() from blk_release_queue() to blk_unregister_queue(), this is safe if blktrace is created through sysfs, however, there is a regression in corner case. blktrace can still be enabled after del_gendisk() through ioctl if the disk is opened before del_gendisk(), and if blktrace is not shutdown through ioctl before closing the disk, debugfs entries will be leaked. Fix this problem by shutdown blktrace in disk_release(), this is safe because blk_trace_remove() is reentrant.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 99d055b4fd4bbb309c6cdb51a0d420669f777944 , < aa07e56c6a9c7558165690d14eed4fe8babf34fb (git)
Affected: 99d055b4fd4bbb309c6cdb51a0d420669f777944 , < 7149e57cf01184fba175589f8fbe9fbf33be02e1 (git)
Affected: 99d055b4fd4bbb309c6cdb51a0d420669f777944 , < 942e81650b81b4ca62f1d8c61de455c9e7c7e6ca (git)
Affected: 99d055b4fd4bbb309c6cdb51a0d420669f777944 , < dd7de3704af9989b780693d51eaea49a665bd9c2 (git)
Create a notification for this product.
    Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.3.13 , ≤ 6.3.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/genhd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aa07e56c6a9c7558165690d14eed4fe8babf34fb",
              "status": "affected",
              "version": "99d055b4fd4bbb309c6cdb51a0d420669f777944",
              "versionType": "git"
            },
            {
              "lessThan": "7149e57cf01184fba175589f8fbe9fbf33be02e1",
              "status": "affected",
              "version": "99d055b4fd4bbb309c6cdb51a0d420669f777944",
              "versionType": "git"
            },
            {
              "lessThan": "942e81650b81b4ca62f1d8c61de455c9e7c7e6ca",
              "status": "affected",
              "version": "99d055b4fd4bbb309c6cdb51a0d420669f777944",
              "versionType": "git"
            },
            {
              "lessThan": "dd7de3704af9989b780693d51eaea49a665bd9c2",
              "status": "affected",
              "version": "99d055b4fd4bbb309c6cdb51a0d420669f777944",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/genhd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.39",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.13",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.4",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix blktrace debugfs entries leakage\n\nCommit 99d055b4fd4b (\"block: remove per-disk debugfs files in\nblk_unregister_queue\") moves blk_trace_shutdown() from\nblk_release_queue() to blk_unregister_queue(), this is safe if blktrace\nis created through sysfs, however, there is a regression in corner\ncase.\n\nblktrace can still be enabled after del_gendisk() through ioctl if\nthe disk is opened before del_gendisk(), and if blktrace is not shutdown\nthrough ioctl before closing the disk, debugfs entries will be leaked.\n\nFix this problem by shutdown blktrace in disk_release(), this is safe\nbecause blk_trace_remove() is reentrant."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:11:08.027Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2"
        }
      ],
      "title": "block: fix blktrace debugfs entries leakage",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54209",
    "datePublished": "2025-12-30T12:11:08.027Z",
    "dateReserved": "2025-12-30T12:06:44.500Z",
    "dateUpdated": "2025-12-30T12:11:08.027Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54209\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:09.087\",\"lastModified\":\"2025-12-31T20:43:05.160\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblock: fix blktrace debugfs entries leakage\\n\\nCommit 99d055b4fd4b (\\\"block: remove per-disk debugfs files in\\nblk_unregister_queue\\\") moves blk_trace_shutdown() from\\nblk_release_queue() to blk_unregister_queue(), this is safe if blktrace\\nis created through sysfs, however, there is a regression in corner\\ncase.\\n\\nblktrace can still be enabled after del_gendisk() through ioctl if\\nthe disk is opened before del_gendisk(), and if blktrace is not shutdown\\nthrough ioctl before closing the disk, debugfs entries will be leaked.\\n\\nFix this problem by shutdown blktrace in disk_release(), this is safe\\nbecause blk_trace_remove() is reentrant.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2\",\"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 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.



Detection rules are retrieved from Rulezet.