CVE-2023-53210 (GCVE-0-2023-53210)
Vulnerability from cvelistv5
Published
2025-09-15 14:21
Modified
2025-09-15 14:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid() r5l_flush_stripe_to_raid() will check if the list 'flushing_ios' is empty, and then submit 'flush_bio', however, r5l_log_flush_endio() is clearing the list first and then clear the bio, which will cause null-ptr-deref: T1: submit flush io raid5d handle_active_stripes r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init submit_bio // io1 T2: io1 is done r5l_log_flush_endio list_splice_tail_init // clear the list T3: submit new flush io ... r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init bio_uninit // clear bio->bi_blkg submit_bio // null-ptr-deref Fix this problem by clearing bio before clearing the list in r5l_log_flush_endio().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d0bd28c500173bfca78aa840f8f36d261ef1765
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/711fb92606208a8626b785da4f9f23d648a5b6c8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a8b6d93991bf4b72b3f959baea35397c6c8e521
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e46b2e7be8059d156af8c011dd8d665229b65886
Impacted products
Vendor Product Version
Linux Linux Version: 0dd00cba99c352dc9afd62979f350d808c215cb9
Version: 0dd00cba99c352dc9afd62979f350d808c215cb9
Version: 0dd00cba99c352dc9afd62979f350d808c215cb9
Version: 0dd00cba99c352dc9afd62979f350d808c215cb9
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   Linux Linux Version: 5.18
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid5-cache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.18"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.16",
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                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()\n\nr5l_flush_stripe_to_raid() will check if the list \u0027flushing_ios\u0027 is\nempty, and then submit \u0027flush_bio\u0027, however, r5l_log_flush_endio()\nis clearing the list first and then clear the bio, which will cause\nnull-ptr-deref:\n\nT1: submit flush io\nraid5d\n handle_active_stripes\n  r5l_flush_stripe_to_raid\n   // list is empty\n   // add \u0027io_end_ios\u0027 to the list\n   bio_init\n   submit_bio\n   // io1\n\nT2: io1 is done\nr5l_log_flush_endio\n list_splice_tail_init\n // clear the list\n\t\t\tT3: submit new flush io\n\t\t\t...\n\t\t\tr5l_flush_stripe_to_raid\n\t\t\t // list is empty\n\t\t\t // add \u0027io_end_ios\u0027 to the list\n\t\t\t bio_init\n bio_uninit\n // clear bio-\u003ebi_blkg\n\t\t\t submit_bio\n\t\t\t // null-ptr-deref\n\nFix this problem by clearing bio before clearing the list in\nr5l_log_flush_endio()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:21:38.534Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/711fb92606208a8626b785da4f9f23d648a5b6c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a8b6d93991bf4b72b3f959baea35397c6c8e521"
        },
        {
          "url": "https://git.kernel.org/stable/c/e46b2e7be8059d156af8c011dd8d665229b65886"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d0bd28c500173bfca78aa840f8f36d261ef1765"
        }
      ],
      "title": "md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53210",
    "datePublished": "2025-09-15T14:21:38.534Z",
    "dateReserved": "2025-09-15T13:59:19.069Z",
    "dateUpdated": "2025-09-15T14:21:38.534Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53210\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:47.547\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmd/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()\\n\\nr5l_flush_stripe_to_raid() will check if the list \u0027flushing_ios\u0027 is\\nempty, and then submit \u0027flush_bio\u0027, however, r5l_log_flush_endio()\\nis clearing the list first and then clear the bio, which will cause\\nnull-ptr-deref:\\n\\nT1: submit flush io\\nraid5d\\n handle_active_stripes\\n  r5l_flush_stripe_to_raid\\n   // list is empty\\n   // add \u0027io_end_ios\u0027 to the list\\n   bio_init\\n   submit_bio\\n   // io1\\n\\nT2: io1 is done\\nr5l_log_flush_endio\\n list_splice_tail_init\\n // clear the list\\n\\t\\t\\tT3: submit new flush io\\n\\t\\t\\t...\\n\\t\\t\\tr5l_flush_stripe_to_raid\\n\\t\\t\\t // list is empty\\n\\t\\t\\t // add \u0027io_end_ios\u0027 to the list\\n\\t\\t\\t bio_init\\n bio_uninit\\n // clear bio-\u003ebi_blkg\\n\\t\\t\\t submit_bio\\n\\t\\t\\t // null-ptr-deref\\n\\nFix this problem by clearing bio before clearing the list in\\nr5l_log_flush_endio().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d0bd28c500173bfca78aa840f8f36d261ef1765\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/711fb92606208a8626b785da4f9f23d648a5b6c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7a8b6d93991bf4b72b3f959baea35397c6c8e521\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e46b2e7be8059d156af8c011dd8d665229b65886\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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