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CVE-2022-50342 (GCVE-0-2022-50342)

Vulnerability from cvelistv5 – Published: 2025-09-16 16:11 – Updated: 2026-05-11 19:17
VLAI
Title
floppy: Fix memory leak in do_floppy_init()
Summary
In the Linux kernel, the following vulnerability has been resolved: floppy: Fix memory leak in do_floppy_init() A memory leak was reported when floppy_alloc_disk() failed in do_floppy_init(). unreferenced object 0xffff888115ed25a0 (size 8): comm "modprobe", pid 727, jiffies 4295051278 (age 25.529s) hex dump (first 8 bytes): 00 ac 67 5b 81 88 ff ff ..g[.... backtrace: [<000000007f457abb>] __kmalloc_node+0x4c/0xc0 [<00000000a87bfa9e>] blk_mq_realloc_tag_set_tags.part.0+0x6f/0x180 [<000000006f02e8b1>] blk_mq_alloc_tag_set+0x573/0x1130 [<0000000066007fd7>] 0xffffffffc06b8b08 [<0000000081f5ac40>] do_one_initcall+0xd0/0x4f0 [<00000000e26d04ee>] do_init_module+0x1a4/0x680 [<000000001bb22407>] load_module+0x6249/0x7110 [<00000000ad31ac4d>] __do_sys_finit_module+0x140/0x200 [<000000007bddca46>] do_syscall_64+0x35/0x80 [<00000000b5afec39>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810fc30540 (size 32): comm "modprobe", pid 727, jiffies 4295051278 (age 25.529s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000007f457abb>] __kmalloc_node+0x4c/0xc0 [<000000006b91eab4>] blk_mq_alloc_tag_set+0x393/0x1130 [<0000000066007fd7>] 0xffffffffc06b8b08 [<0000000081f5ac40>] do_one_initcall+0xd0/0x4f0 [<00000000e26d04ee>] do_init_module+0x1a4/0x680 [<000000001bb22407>] load_module+0x6249/0x7110 [<00000000ad31ac4d>] __do_sys_finit_module+0x140/0x200 [<000000007bddca46>] do_syscall_64+0x35/0x80 [<00000000b5afec39>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 If the floppy_alloc_disk() failed, disks of current drive will not be set, thus the lastest allocated set->tag cannot be freed in the error handling path. A simple call graph shown as below: floppy_module_init() floppy_init() do_floppy_init() for (drive = 0; drive < N_DRIVE; drive++) blk_mq_alloc_tag_set() blk_mq_alloc_tag_set_tags() blk_mq_realloc_tag_set_tags() # set->tag allocated floppy_alloc_disk() blk_mq_alloc_disk() # error occurred, disks failed to allocated ->out_put_disk: for (drive = 0; drive < N_DRIVE; drive++) if (!disks[drive][0]) # the last disks is not set and loop break break; blk_mq_free_tag_set() # the latest allocated set->tag leaked Fix this problem by free the set->tag of current drive before jump to error handling path. [efremov: added stable list, changed title]
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:20 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 302cfee150291c6cd85b1ca197d062d0b423d09c , < f36d8c8651506aea5f09899f5356ece5d1384f50 (git)
Affected: 302cfee150291c6cd85b1ca197d062d0b423d09c , < 75d8c8851a4da0190c2480e84315b5fd3d0356c5 (git)
Affected: 302cfee150291c6cd85b1ca197d062d0b423d09c , < 55b3c66a0d441cd37154ae95e44d0b82ccfd580e (git)
Affected: 302cfee150291c6cd85b1ca197d062d0b423d09c , < f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfloppy: Fix memory leak in do_floppy_init()\n\nA memory leak was reported when floppy_alloc_disk() failed in\ndo_floppy_init().\n\nunreferenced object 0xffff888115ed25a0 (size 8):\n  comm \"modprobe\", pid 727, jiffies 4295051278 (age 25.529s)\n  hex dump (first 8 bytes):\n    00 ac 67 5b 81 88 ff ff                          ..g[....\n  backtrace:\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\n    [\u003c00000000a87bfa9e\u003e] blk_mq_realloc_tag_set_tags.part.0+0x6f/0x180\n    [\u003c000000006f02e8b1\u003e] blk_mq_alloc_tag_set+0x573/0x1130\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\nunreferenced object 0xffff88810fc30540 (size 32):\n  comm \"modprobe\", pid 727, jiffies 4295051278 (age 25.529s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\n    [\u003c000000006b91eab4\u003e] blk_mq_alloc_tag_set+0x393/0x1130\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nIf the floppy_alloc_disk() failed, disks of current drive will not be set,\nthus the lastest allocated set-\u003etag cannot be freed in the error handling\npath. A simple call graph shown as below:\n\n floppy_module_init()\n   floppy_init()\n     do_floppy_init()\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\n         blk_mq_alloc_tag_set()\n           blk_mq_alloc_tag_set_tags()\n             blk_mq_realloc_tag_set_tags() # set-\u003etag allocated\n         floppy_alloc_disk()\n           blk_mq_alloc_disk() # error occurred, disks failed to allocated\n\n       -\u003eout_put_disk:\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\n         if (!disks[drive][0]) # the last disks is not set and loop break\n           break;\n         blk_mq_free_tag_set() # the latest allocated set-\u003etag leaked\n\nFix this problem by free the set-\u003etag of current drive before jump to\nerror handling path.\n\n[efremov: added stable list, changed title]"
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:17:34.790Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f36d8c8651506aea5f09899f5356ece5d1384f50"
        },
        {
          "url": "https://git.kernel.org/stable/c/75d8c8851a4da0190c2480e84315b5fd3d0356c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/55b3c66a0d441cd37154ae95e44d0b82ccfd580e"
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        {
          "url": "https://git.kernel.org/stable/c/f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec"
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      ],
      "title": "floppy: Fix memory leak in do_floppy_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50342",
    "datePublished": "2025-09-16T16:11:21.665Z",
    "dateReserved": "2025-09-16T16:03:27.881Z",
    "dateUpdated": "2026-05-11T19:17:34.790Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50342",
      "date": "2026-09-17",
      "epss": "0.00155",
      "percentile": "0.05051"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50342\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-16T17:15:33.807\",\"lastModified\":\"2026-06-17T05:23:16.460\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfloppy: Fix memory leak in do_floppy_init()\\n\\nA memory leak was reported when floppy_alloc_disk() failed in\\ndo_floppy_init().\\n\\nunreferenced object 0xffff888115ed25a0 (size 8):\\n  comm \\\"modprobe\\\", pid 727, jiffies 4295051278 (age 25.529s)\\n  hex dump (first 8 bytes):\\n    00 ac 67 5b 81 88 ff ff                          ..g[....\\n  backtrace:\\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\\n    [\u003c00000000a87bfa9e\u003e] blk_mq_realloc_tag_set_tags.part.0+0x6f/0x180\\n    [\u003c000000006f02e8b1\u003e] blk_mq_alloc_tag_set+0x573/0x1130\\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\nunreferenced object 0xffff88810fc30540 (size 32):\\n  comm \\\"modprobe\\\", pid 727, jiffies 4295051278 (age 25.529s)\\n  hex dump (first 32 bytes):\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n  backtrace:\\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\\n    [\u003c000000006b91eab4\u003e] blk_mq_alloc_tag_set+0x393/0x1130\\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n\\nIf the floppy_alloc_disk() failed, disks of current drive will not be set,\\nthus the lastest allocated set-\u003etag cannot be freed in the error handling\\npath. A simple call graph shown as below:\\n\\n floppy_module_init()\\n   floppy_init()\\n     do_floppy_init()\\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\\n         blk_mq_alloc_tag_set()\\n           blk_mq_alloc_tag_set_tags()\\n             blk_mq_realloc_tag_set_tags() # set-\u003etag allocated\\n         floppy_alloc_disk()\\n           blk_mq_alloc_disk() # error occurred, disks failed to allocated\\n\\n       -\u003eout_put_disk:\\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\\n         if (!disks[drive][0]) # the last disks is not set and loop break\\n           break;\\n         blk_mq_free_tag_set() # the latest allocated set-\u003etag leaked\\n\\nFix this problem by free the set-\u003etag of current drive before jump to\\nerror handling path.\\n\\n[efremov: added stable list, changed title]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/block/floppy.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"302cfee150291c6cd85b1ca197d062d0b423d09c\",\"lessThan\":\"f36d8c8651506aea5f09899f5356ece5d1384f50\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"302cfee150291c6cd85b1ca197d062d0b423d09c\",\"lessThan\":\"75d8c8851a4da0190c2480e84315b5fd3d0356c5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"302cfee150291c6cd85b1ca197d062d0b423d09c\",\"lessThan\":\"55b3c66a0d441cd37154ae95e44d0b82ccfd580e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"302cfee150291c6cd85b1ca197d062d0b423d09c\",\"lessThan\":\"f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/block/floppy.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.86\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.16\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.2\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T18:20:06.449961Z\",\"id\":\"CVE-2022-50342\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.86\",\"matchCriteriaId\":\"47237296-55D1-4ED4-8075-D00FC85A61EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.16\",\"matchCriteriaId\":\"C720A569-3D93-4D77-95F6-E2B3A3267D9F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.2\",\"matchCriteriaId\":\"77239F4B-6BB2-4B9E-A654-36A52396116C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/55b3c66a0d441cd37154ae95e44d0b82ccfd580e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/75d8c8851a4da0190c2480e84315b5fd3d0356c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f36d8c8651506aea5f09899f5356ece5d1384f50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:07:14+00:00",
      "cve": "CVE-2022-50342",
      "id": "CVE-2022-50342",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "152",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: floppy: Fix memory leak in do_floppy_init()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50342.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:24:33Z",
      "cve": "CVE-2022-50342",
      "id": "CVE-2022-50342",
      "initial_release_date": "2025-09-16T23:33:23Z",
      "product_status:known_affected": "344",
      "product_status:known_not_affected": "395",
      "product_status:recommended": "235",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50342",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50342.json",
      "version": "32"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-50342\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:20:06.449961Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:20:00.654Z\"}}], \"cna\": {\"title\": \"floppy: Fix memory leak in do_floppy_init()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"302cfee150291c6cd85b1ca197d062d0b423d09c\", \"lessThan\": \"f36d8c8651506aea5f09899f5356ece5d1384f50\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"302cfee150291c6cd85b1ca197d062d0b423d09c\", \"lessThan\": \"75d8c8851a4da0190c2480e84315b5fd3d0356c5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"302cfee150291c6cd85b1ca197d062d0b423d09c\", \"lessThan\": \"55b3c66a0d441cd37154ae95e44d0b82ccfd580e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"302cfee150291c6cd85b1ca197d062d0b423d09c\", \"lessThan\": \"f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/block/floppy.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.86\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/block/floppy.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f36d8c8651506aea5f09899f5356ece5d1384f50\"}, {\"url\": \"https://git.kernel.org/stable/c/75d8c8851a4da0190c2480e84315b5fd3d0356c5\"}, {\"url\": \"https://git.kernel.org/stable/c/55b3c66a0d441cd37154ae95e44d0b82ccfd580e\"}, {\"url\": \"https://git.kernel.org/stable/c/f8ace2e304c5dd8a7328db9cd2b8a4b1b98d83ec\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfloppy: Fix memory leak in do_floppy_init()\\n\\nA memory leak was reported when floppy_alloc_disk() failed in\\ndo_floppy_init().\\n\\nunreferenced object 0xffff888115ed25a0 (size 8):\\n  comm \\\"modprobe\\\", pid 727, jiffies 4295051278 (age 25.529s)\\n  hex dump (first 8 bytes):\\n    00 ac 67 5b 81 88 ff ff                          ..g[....\\n  backtrace:\\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\\n    [\u003c00000000a87bfa9e\u003e] blk_mq_realloc_tag_set_tags.part.0+0x6f/0x180\\n    [\u003c000000006f02e8b1\u003e] blk_mq_alloc_tag_set+0x573/0x1130\\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\nunreferenced object 0xffff88810fc30540 (size 32):\\n  comm \\\"modprobe\\\", pid 727, jiffies 4295051278 (age 25.529s)\\n  hex dump (first 32 bytes):\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n  backtrace:\\n    [\u003c000000007f457abb\u003e] __kmalloc_node+0x4c/0xc0\\n    [\u003c000000006b91eab4\u003e] blk_mq_alloc_tag_set+0x393/0x1130\\n    [\u003c0000000066007fd7\u003e] 0xffffffffc06b8b08\\n    [\u003c0000000081f5ac40\u003e] do_one_initcall+0xd0/0x4f0\\n    [\u003c00000000e26d04ee\u003e] do_init_module+0x1a4/0x680\\n    [\u003c000000001bb22407\u003e] load_module+0x6249/0x7110\\n    [\u003c00000000ad31ac4d\u003e] __do_sys_finit_module+0x140/0x200\\n    [\u003c000000007bddca46\u003e] do_syscall_64+0x35/0x80\\n    [\u003c00000000b5afec39\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n\\nIf the floppy_alloc_disk() failed, disks of current drive will not be set,\\nthus the lastest allocated set-\u003etag cannot be freed in the error handling\\npath. A simple call graph shown as below:\\n\\n floppy_module_init()\\n   floppy_init()\\n     do_floppy_init()\\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\\n         blk_mq_alloc_tag_set()\\n           blk_mq_alloc_tag_set_tags()\\n             blk_mq_realloc_tag_set_tags() # set-\u003etag allocated\\n         floppy_alloc_disk()\\n           blk_mq_alloc_disk() # error occurred, disks failed to allocated\\n\\n       -\u003eout_put_disk:\\n       for (drive = 0; drive \u003c N_DRIVE; drive++)\\n         if (!disks[drive][0]) # the last disks is not set and loop break\\n           break;\\n         blk_mq_free_tag_set() # the latest allocated set-\u003etag leaked\\n\\nFix this problem by free the set-\u003etag of current drive before jump to\\nerror handling path.\\n\\n[efremov: added stable list, changed title]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.86\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.16\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.2\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"5.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-16T16:11:34.260Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50342\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:22:57.872Z\", \"dateReserved\": \"2025-09-16T16:03:27.881Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-16T16:11:21.665Z\", \"assignerShortName\": \"Linux\"}",
      "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

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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.


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