cve-2022-48635
Vulnerability from cvelistv5
Published
2024-04-28 12:59
Modified
2024-08-03 15:17
Severity
6.2 (Medium) - cvssV3_1 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
fsdax: Fix infinite loop in dax_iomap_rw()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60644dffac87b1bb47bdb393aa29d5f2ffcf41a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/929ef155e1da41c06f4d8ca86ae12b851a83a744
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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              "availabilityImpact": "HIGH",
              "baseScore": 6.2,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
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              "content": {
                "id": "CVE-2022-48635",
                "options": [
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-14T20:43:30.986785Z",
                "version": "2.0.3"
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                "cweId": "CWE-835",
                "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
                "lang": "en",
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/dax.c"
          ],
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsdax: Fix infinite loop in dax_iomap_rw()\n\nI got an infinite loop and a WARNING report when executing a tail command\nin virtiofs.\n\n  WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0\n  Modules linked in:\n  CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7\n  Call Trace:\n  \u003cTASK\u003e\n  dax_iomap_rw+0xea/0x620\n  ? __this_cpu_preempt_check+0x13/0x20\n  fuse_dax_read_iter+0x47/0x80\n  fuse_file_read_iter+0xae/0xd0\n  new_sync_read+0xfe/0x180\n  ? 0xffffffff81000000\n  vfs_read+0x14d/0x1a0\n  ksys_read+0x6d/0xf0\n  __x64_sys_read+0x1a/0x20\n  do_syscall_64+0x3b/0x90\n  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe tail command will call read() with a count of 0. In this case,\niomap_iter() will report this WARNING, and always return 1 which casuing\nthe infinite loop in dax_iomap_rw().\n\nFixing by checking count whether is 0 in dax_iomap_rw()."
        }
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          "url": "https://git.kernel.org/stable/c/17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3"
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      ],
      "title": "fsdax: Fix infinite loop in dax_iomap_rw()",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48635",
    "datePublished": "2024-04-28T12:59:24.359Z",
    "dateReserved": "2024-02-25T13:44:28.315Z",
    "dateUpdated": "2024-08-03T15:17:55.386Z",
    "state": "PUBLISHED"
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48635\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-28T13:15:06.663\",\"lastModified\":\"2024-07-03T01:39:01.047\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfsdax: Fix infinite loop in dax_iomap_rw()\\n\\nI got an infinite loop and a WARNING report when executing a tail command\\nin virtiofs.\\n\\n  WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0\\n  Modules linked in:\\n  CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7\\n  Call Trace:\\n  \u003cTASK\u003e\\n  dax_iomap_rw+0xea/0x620\\n  ? __this_cpu_preempt_check+0x13/0x20\\n  fuse_dax_read_iter+0x47/0x80\\n  fuse_file_read_iter+0xae/0xd0\\n  new_sync_read+0xfe/0x180\\n  ? 0xffffffff81000000\\n  vfs_read+0x14d/0x1a0\\n  ksys_read+0x6d/0xf0\\n  __x64_sys_read+0x1a/0x20\\n  do_syscall_64+0x3b/0x90\\n  entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nThe tail command will call read() with a count of 0. In this case,\\niomap_iter() will report this WARNING, and always return 1 which casuing\\nthe infinite loop in dax_iomap_rw().\\n\\nFixing by checking count whether is 0 in dax_iomap_rw().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: fsdax: Reparar bucle infinito en dax_iomap_rw() Obtuve un bucle infinito y un informe de ADVERTENCIA al ejecutar un comando tail en virtiofs. ADVERTENCIA: CPU: 10 PID: 964 en fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0 M\u00f3dulos vinculados en: CPU: 10 PID: 964 Comm: tail No contaminado 5.19.0-rc7 Seguimiento de llamadas:  dax_iomap_rw +0xea/0x620 ? __this_cpu_preempt_check+0x13/0x20 fuse_dax_read_iter+0x47/0x80 fuse_file_read_iter+0xae/0xd0 new_sync_read+0xfe/0x180 ? 0xffffffff81000000 vfs_read+0x14d/0x1a0 ksys_read+0x6d/0xf0 __x64_sys_read+0x1a/0x20 do_syscall_64+0x3b/0x90 Entry_SYSCALL_64_after_hwframe+0x63/0xcd El comando tail llamar\u00e1 a read() con un recuento de 0. En este caso, iomap_iter() informar\u00e1 esto ADVERTENCIA, y siempre devuelve 1, lo que provoca el bucle infinito en dax_iomap_rw(). Arreglando verificando el recuento si es 0 en dax_iomap_rw().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.2,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.5,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-835\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/60644dffac87b1bb47bdb393aa29d5f2ffcf41a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/929ef155e1da41c06f4d8ca86ae12b851a83a744\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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