CVE-2023-53111 (GCVE-0-2023-53111)
Vulnerability from cvelistv5
Published
2025-05-02 15:55
Modified
2025-05-04 07:50
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: loop: Fix use-after-free issues do_req_filebacked() calls blk_mq_complete_request() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor 'rq' after do_req_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558 worker_thread+0x400/0x8fc kthread+0x16c/0x1e0 ret_from_fork+0x10/0x20
References
Impacted products
Vendor Product Version
Linux Linux Version: bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6
Version: bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6
Version: bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6
Version: bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/loop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/loop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
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              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.104",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.21",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.2.8",
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                {
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                  "versionEndExcluding": "6.3",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nloop: Fix use-after-free issues\n\ndo_req_filebacked() calls blk_mq_complete_request() synchronously or\nasynchronously when using asynchronous I/O unless memory allocation fails.\nHence, modify loop_handle_cmd() such that it does not dereference \u0027cmd\u0027 nor\n\u0027rq\u0027 after do_req_filebacked() finished unless we are sure that the request\nhas not yet been completed. This patch fixes the following kernel crash:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000054\nCall trace:\n css_put.42938+0x1c/0x1ac\n loop_process_work+0xc8c/0xfd4\n loop_rootcg_workfn+0x24/0x34\n process_one_work+0x244/0x558\n worker_thread+0x400/0x8fc\n kthread+0x16c/0x1e0\n ret_from_fork+0x10/0x20"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:50:04.811Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada"
        },
        {
          "url": "https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec"
        }
      ],
      "title": "loop: Fix use-after-free issues",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53111",
    "datePublished": "2025-05-02T15:55:51.029Z",
    "dateReserved": "2025-05-02T15:51:43.554Z",
    "dateUpdated": "2025-05-04T07:50:04.811Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53111\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-02T16:15:30.027\",\"lastModified\":\"2025-05-05T20:54:45.973\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nloop: Fix use-after-free issues\\n\\ndo_req_filebacked() calls blk_mq_complete_request() synchronously or\\nasynchronously when using asynchronous I/O unless memory allocation fails.\\nHence, modify loop_handle_cmd() such that it does not dereference \u0027cmd\u0027 nor\\n\u0027rq\u0027 after do_req_filebacked() finished unless we are sure that the request\\nhas not yet been completed. This patch fixes the following kernel crash:\\n\\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000054\\nCall trace:\\n css_put.42938+0x1c/0x1ac\\n loop_process_work+0xc8c/0xfd4\\n loop_rootcg_workfn+0x24/0x34\\n process_one_work+0x244/0x558\\n worker_thread+0x400/0x8fc\\n kthread+0x16c/0x1e0\\n ret_from_fork+0x10/0x20\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: loop: Se corrigen los problemas de use after free. do_req_filebacked() llama a blk_mq_complete_request() de forma s\u00edncrona o as\u00edncrona al usar E/S as\u00edncrona, a menos que falle la asignaci\u00f3n de memoria. Por lo tanto, se debe modificar loop_handle_cmd() para que no desreferencia \u00abcmd\u00bb ni \u00abrq\u00bb tras la finalizaci\u00f3n de do_req_filebacked(), a menos que estemos seguros de que la solicitud a\u00fan no se ha completado. Este parche corrige el siguiente fallo del kernel: No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000054 Seguimiento de llamadas: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558worker_thread+0x400/0x8fckthread+0x16c/0x1e0ret_from_fork+0x10/0x20\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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