CVE-2023-53676 (GCVE-0-2023-53676)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-01-05 10:21
VLAI?
Title
scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() The function lio_target_nacl_info_show() uses sprintf() in a loop to print details for every iSCSI connection in a session without checking for the buffer length. With enough iSCSI connections it's possible to overflow the buffer provided by configfs and corrupt the memory. This patch replaces sprintf() with sysfs_emit_at() that checks for buffer boundries.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < df349e84c2cb0dd05d98c8e1189c26ab4b116083 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 114b44dddea1f8f99576de3c0e6e9059012002fc (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 5353df78c22623b42a71d51226d228a8413097e2 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 4738bf8b2d3635c2944b81b2a84d97b8c8b0978d (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 0cac6cbb9908309352a5d30c1876882771d3da50 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 801f287c93ff95582b0a2d2163f12870a2f076d4 (git)
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    Linux Linux Affected: 3.1
Unaffected: 0 , < 3.1 (semver)
Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.197 , ≤ 5.10.* (semver)
Unaffected: 5.15.133 , ≤ 5.15.* (semver)
Unaffected: 6.1.55 , ≤ 6.1.* (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/iscsi/iscsi_target_configfs.c"
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            {
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              "status": "unaffected",
              "version": "0",
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            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.295",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.55",
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              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.5",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()\n\nThe function lio_target_nacl_info_show() uses sprintf() in a loop to print\ndetails for every iSCSI connection in a session without checking for the\nbuffer length. With enough iSCSI connections it\u0027s possible to overflow the\nbuffer provided by configfs and corrupt the memory.\n\nThis patch replaces sprintf() with sysfs_emit_at() that checks for buffer\nboundries."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:21:49.841Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083"
        },
        {
          "url": "https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2"
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        },
        {
          "url": "https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4"
        }
      ],
      "title": "scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53676",
    "datePublished": "2025-10-07T15:21:31.757Z",
    "dateReserved": "2025-10-07T15:16:59.664Z",
    "dateUpdated": "2026-01-05T10:21:49.841Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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