cve-2024-50280
Vulnerability from cvelistv5
Published
2024-11-19 01:30
Modified
2024-12-19 09:37
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718
Impacted products
Vendor Product Version
Linux Linux Version: 6.2
Show details on NVD website

To clipboard 

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          "programFiles": [
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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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    "cveId": "CVE-2024-50280",
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    "dateReserved": "2024-10-21T19:36:19.983Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50280\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T02:16:30.303\",\"lastModified\":\"2024-12-11T15:15:14.733\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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