cve/published/2022/CVE-2022-49406.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: Fix potential deadlock in blk_ia_range_sysfs_show()\n\nWhen being read, a sysfs attribute is already protected against removal\nwith the kobject node active reference counter. As a result, in\nblk_ia_range_sysfs_show(), there is no need to take the queue sysfs\nlock when reading the value of a range attribute. Using the queue sysfs\nlock in this function creates a potential deadlock situation with the\ndisk removal, something that a lockdep signals with a splat when the\ndevice is removed:\n\n[  760.703551]  Possible unsafe locking scenario:\n[  760.703551]\n[  760.703554]        CPU0                    CPU1\n[  760.703556]        ----                    ----\n[  760.703558]   lock(&q->sysfs_lock);\n[  760.703565]                                lock(kn->active#385);\n[  760.703573]                                lock(&q->sysfs_lock);\n[  760.703579]   lock(kn->active#385);\n[  760.703587]\n[  760.703587]  *** DEADLOCK ***\n\nSolve this by removing the mutex_lock()/mutex_unlock() calls from\nblk_ia_range_sysfs_show()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "block/blk-ia-ranges.c"
               ],
               "versions": [
                  {
                     "version": "a2247f19ee1c5ad75ef095cdfb909a3244b88aa8",
                     "lessThan": "dc107c805cde709866b59867ef72b9390199205e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a2247f19ee1c5ad75ef095cdfb909a3244b88aa8",
                     "lessThan": "717b078bc745ba9a262abebed9806a17e8bbb77b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a2247f19ee1c5ad75ef095cdfb909a3244b88aa8",
                     "lessThan": "41e46b3c2aa24f755b2ae9ec4ce931ba5f0d8532",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "block/blk-ia-ranges.c"
               ],
               "versions": [
                  {
                     "version": "5.16",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.16",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.17.14",
                     "lessThanOrEqual": "5.17.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.18.3",
                     "lessThanOrEqual": "5.18.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.19",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.16",
                           "versionEndExcluding": "5.17.14"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.16",
                           "versionEndExcluding": "5.18.3"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.16",
                           "versionEndExcluding": "5.19"
                        }
                     ]
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         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/dc107c805cde709866b59867ef72b9390199205e"
            },
            {
               "url": "https://git.kernel.org/stable/c/717b078bc745ba9a262abebed9806a17e8bbb77b"
            },
            {
               "url": "https://git.kernel.org/stable/c/41e46b3c2aa24f755b2ae9ec4ce931ba5f0d8532"
            }
         ],
         "title": "block: Fix potential deadlock in blk_ia_range_sysfs_show()",
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      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-49406",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}