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CVE-2024-50280 (GCVE-0-2024-50280)

Vulnerability from cvelistv5 – Published: 2024-11-19 01:30 – Updated: 2026-05-23 15:54
VLAI
Title
dm cache: fix flushing uninitialized delayed_work on cache_ctr error
Summary
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:25 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2b17026685a270b2beaf1cdd9857fcedd3505c7e , < 40fac0271c7aedf60d81ed8214e80851e5b26312 (git)
Affected: d2a0b298ebf83ab6236f66788a3541e91ce75a70 , < d154b333a5667b6c1b213a11a41ad7aaccd10c3d (git)
Affected: 6a3e412c2ab131c54945327a7676b006f000a209 , < 5a754d3c771280f2d06bf8ab716d6a0d36ca256e (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < 8cc12dab635333c4ea28e72d7b947be7d0543c2c (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < aee3ecda73ce13af7c3e556383342b57e6bd0718 (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < 135496c208ba26fd68cdef10b64ed7a91ac9a7ff (git)
Affected: 034cbc8d3b47a56acd89453c29632a9c117de09d (git)
Affected: 993406104d2b28fe470126a062ad37a1e21e792e (git)
Affected: 4d20032dd90664de09f2902a7ea49ae2f7771746 (git)
Affected: 2f097dfac7579fd84ff98eb1d3acd41d53a485f3 (git)
Affected: 6ac4f36910764cb510bafc4c3768544f86ca48ca (git)
Affected: 5.10.163 , < 5.10.237 (semver)
Affected: 5.15.87 , < 5.15.181 (semver)
Affected: 6.1.4 , < 6.1.117 (semver)
Affected: 4.9.337 , < 4.10 (semver)
Affected: 4.14.303 , < 4.15 (semver)
Affected: 4.19.270 , < 4.20 (semver)
Affected: 5.4.229 , < 5.5 (semver)
Affected: 6.0.18 , < 6.1 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 5.10.237 , ≤ 5.10.* (semver)
Unaffected: 5.15.181 , ≤ 5.15.* (semver)
Unaffected: 6.1.117 , ≤ 6.1.* (semver)
Unaffected: 6.6.61 , ≤ 6.6.* (semver)
Unaffected: 6.11.8 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix flushing uninitialized delayed_work on cache_ctr error\n\nAn unexpected WARN_ON from flush_work() may occur when cache creation\nfails, caused by destroying the uninitialized delayed_work waker in the\nerror path of cache_create(). For example, the warning appears on the\nsuperblock checksum error.\n\nReproduce steps:\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 524288 linear /dev/sdc 262144\"\ndd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\nKernel logs:\n\n(snip)\nWARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890\n\nFix by pulling out the cancel_delayed_work_sync() from the constructor\u0027s\nerror path. This patch doesn\u0027t affect the use-after-free fix for\nconcurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\"dm cache: Fix\nUAF in destroy()\")) as cache_dtr is not changed."
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    "datePublished": "2024-11-19T01:30:21.999Z",
    "dateReserved": "2024-10-21T19:36:19.983Z",
    "dateUpdated": "2026-05-23T15:54:56.616Z",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix flushing uninitialized delayed_work on cache_ctr error\n\nAn unexpected WARN_ON from flush_work() may occur when cache creation\nfails, caused by destroying the uninitialized delayed_work waker in the\nerror path of cache_create(). For example, the warning appears on the\nsuperblock checksum error.\n\nReproduce steps:\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 524288 linear /dev/sdc 262144\"\ndd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\nKernel logs:\n\n(snip)\nWARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890\n\nFix by pulling out the cancel_delayed_work_sync() from the constructor\u0027s\nerror path. This patch doesn\u0027t affect the use-after-free fix for\nconcurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\"dm cache: Fix\nUAF in destroy()\")) as cache_dtr is not changed."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm cache: fix flushing uninitialized delayed_work on cache_ctr error Se puede producir un WARN_ON inesperado de flush_work() cuando falla la creaci\u00f3n de cach\u00e9, causado por la destrucci\u00f3n del activador delayed_work no inicializado en la ruta de error de cache_create(). Por ejemplo, la advertencia aparece en el error de suma de comprobaci\u00f3n del superbloque. Reproducir los pasos: dmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\" dmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\" dmsetup create corig --table \"0 524288 linear /dev/sdc 262144\" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\" Registros del kernel: (fragmento) ADVERTENCIA: CPU: 0 PID: 84 en kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Se soluciona extrayendo cancel_delayed_work_sync() de la ruta de error del constructor. Este parche no afecta la correcci\u00f3n de use-after-free para dm_resume y dm_destroy simult\u00e1neos (commit 6a459d8edbdb (\"dm cache: Fix UAF in destroy()\")) ya que cache_dtr no se modifica."
        }
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      "product_status:known_not_affected": "2",
      "source": "Microsoft CSAF VEX",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix flushing uninitialized delayed_work on cache_ctr error\n\nAn unexpected WARN_ON from flush_work() may occur when cache creation\nfails, caused by destroying the uninitialized delayed_work waker in the\nerror path of cache_create(). For example, the warning appears on the\nsuperblock checksum error.\n\nReproduce steps:\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 524288 linear /dev/sdc 262144\"\ndd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\nKernel logs:\n\n(snip)\nWARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890\n\nFix by pulling out the cancel_delayed_work_sync() from the constructor\u0027s\nerror path. This patch doesn\u0027t affect the use-after-free fix for\nconcurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\"dm cache: Fix\nUAF in destroy()\")) as cache_dtr is not changed."
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm cache: fix flushing uninitialized delayed_work on cache_ctr error Se puede producir un WARN_ON inesperado de flush_work() cuando falla la creaci\u00f3n de cach\u00e9, causado por la destrucci\u00f3n del activador delayed_work no inicializado en la ruta de error de cache_create(). Por ejemplo, la advertencia aparece en el error de suma de comprobaci\u00f3n del superbloque. Reproducir los pasos: dmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\" dmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\" dmsetup create corig --table \"0 524288 linear /dev/sdc 262144\" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\" Registros del kernel: (fragmento) ADVERTENCIA: CPU: 0 PID: 84 en kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Se soluciona extrayendo cancel_delayed_work_sync() de la ruta de error del constructor. Este parche no afecta la correcci\u00f3n de use-after-free para dm_resume y dm_destroy simult\u00e1neos (commit 6a459d8edbdb (\"dm cache: Fix UAF in destroy()\")) ya que cache_dtr no se modifica."
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                  "status": "affected",
                  "version": "993406104d2b28fe470126a062ad37a1e21e792e",
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                {
                  "status": "affected",
                  "version": "4d20032dd90664de09f2902a7ea49ae2f7771746",
                  "versionType": "git"
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                },
                {
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                  "version": "5.10.163",
                  "versionType": "semver"
                },
                {
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                },
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                  "version": "4.9.337",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.15",
                  "status": "affected",
                  "version": "4.14.303",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.20",
                  "status": "affected",
                  "version": "4.19.270",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.5",
                  "status": "affected",
                  "version": "5.4.229",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.1",
                  "status": "affected",
                  "version": "6.0.18",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/md/dm-cache-target.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.2"
                },
                {
                  "lessThan": "6.2",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.237",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.181",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.117",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.61",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.8",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.237",
                      "versionStartIncluding": "5.10.163",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.181",
                      "versionStartIncluding": "5.15.87",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.117",
                      "versionStartIncluding": "6.1.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.61",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11.8",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.9.337",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.14.303",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.19.270",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                      "vulnerable": true
                    },
                    {
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                      "versionStartIncluding": "6.0.18",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix flushing uninitialized delayed_work on cache_ctr error\n\nAn unexpected WARN_ON from flush_work() may occur when cache creation\nfails, caused by destroying the uninitialized delayed_work waker in the\nerror path of cache_create(). For example, the warning appears on the\nsuperblock checksum error.\n\nReproduce steps:\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 524288 linear /dev/sdc 262144\"\ndd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\nKernel logs:\n\n(snip)\nWARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890\n\nFix by pulling out the cancel_delayed_work_sync() from the constructor\u0027s\nerror path. This patch doesn\u0027t affect the use-after-free fix for\nconcurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\"dm cache: Fix\nUAF in destroy()\")) as cache_dtr is not changed."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T15:54:56.616Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/40fac0271c7aedf60d81ed8214e80851e5b26312"
            },
            {
              "url": "https://git.kernel.org/stable/c/d154b333a5667b6c1b213a11a41ad7aaccd10c3d"
            },
            {
              "url": "https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e"
            },
            {
              "url": "https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c"
            },
            {
              "url": "https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718"
            },
            {
              "url": "https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff"
            }
          ],
          "title": "dm cache: fix flushing uninitialized delayed_work on cache_ctr error",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50280",
        "datePublished": "2024-11-19T01:30:21.999Z",
        "dateReserved": "2024-10-21T19:36:19.983Z",
        "dateUpdated": "2026-05-23T15:54:56.616Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.