CVE-2023-53210 (GCVE-0-2023-53210)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2026-05-11 19:40
VLAI
Title
md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()
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().
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 17:48 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6665 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0dd00cba99c352dc9afd62979f350d808c215cb9 , < 711fb92606208a8626b785da4f9f23d648a5b6c8 (git)
Affected: 0dd00cba99c352dc9afd62979f350d808c215cb9 , < 7a8b6d93991bf4b72b3f959baea35397c6c8e521 (git)
Affected: 0dd00cba99c352dc9afd62979f350d808c215cb9 , < e46b2e7be8059d156af8c011dd8d665229b65886 (git)
Affected: 0dd00cba99c352dc9afd62979f350d808c215cb9 , < 0d0bd28c500173bfca78aa840f8f36d261ef1765 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.53 , ≤ 6.1.* (semver)
Unaffected: 6.4.16 , ≤ 6.4.* (semver)
Unaffected: 6.5.3 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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                  "lessThan": "711fb92606208a8626b785da4f9f23d648a5b6c8",
                  "status": "affected",
                  "version": "0dd00cba99c352dc9afd62979f350d808c215cb9",
                  "versionType": "git"
                },
                {
                  "lessThan": "7a8b6d93991bf4b72b3f959baea35397c6c8e521",
                  "status": "affected",
                  "version": "0dd00cba99c352dc9afd62979f350d808c215cb9",
                  "versionType": "git"
                },
                {
                  "lessThan": "e46b2e7be8059d156af8c011dd8d665229b65886",
                  "status": "affected",
                  "version": "0dd00cba99c352dc9afd62979f350d808c215cb9",
                  "versionType": "git"
                },
                {
                  "lessThan": "0d0bd28c500173bfca78aa840f8f36d261ef1765",
                  "status": "affected",
                  "version": "0dd00cba99c352dc9afd62979f350d808c215cb9",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/md/raid5-cache.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.18"
                },
                {
                  "lessThan": "5.18",
                  "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",
                  "version": "6.6",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.53",
                      "versionStartIncluding": "5.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.4.16",
                      "versionStartIncluding": "5.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.5.3",
                      "versionStartIncluding": "5.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6",
                      "versionStartIncluding": "5.18",
                      "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": "2026-05-11T19:40:24.649Z",
            "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": "2026-05-11T19:40:24.649Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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