{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: wait for ondemand_object_worker to finish when dropping object\n\nWhen queuing ondemand_object_worker() to re-open the object,\ncachefiles_object is not pinned. The cachefiles_object may be freed when\nthe pending read request is completed intentionally and the related\nerofs is umounted. If ondemand_object_worker() runs after the object is\nfreed, it will incur use-after-free problem as shown below.\n\nprocess A  processs B  process C  process D\n\ncachefiles_ondemand_send_req()\n// send a read req X\n// wait for its completion\n\n           // close ondemand fd\n           cachefiles_ondemand_fd_release()\n           // set object as CLOSE\n\n                       cachefiles_ondemand_daemon_read()\n                       // set object as REOPENING\n                       queue_work(fscache_wq, &info->ondemand_work)\n\n                                // close /dev/cachefiles\n                                cachefiles_daemon_release\n                                cachefiles_flush_reqs\n                                complete(&req->done)\n\n// read req X is completed\n// umount the erofs fs\ncachefiles_put_object()\n// object will be freed\ncachefiles_ondemand_deinit_obj_info()\nkmem_cache_free(object)\n                       // both info and object are freed\n                       ondemand_object_worker()\n\nWhen dropping an object, it is no longer necessary to reopen the object,\nso use cancel_work_sync() to cancel or wait for ondemand_object_worker()\nto finish."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/cachefiles/ondemand.c"
               ],
               "versions": [
                  {
                     "version": "f17443d52d80",
                     "lessThan": "ec9289369259",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f740fd943bb1",
                     "lessThan": "d3179bae72b1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0a7e54c1959c",
                     "lessThan": "b26525b21836",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0a7e54c1959c",
                     "lessThan": "12e009d60852",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/cachefiles/ondemand.c"
               ],
               "versions": [
                  {
                     "version": "6.8",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.8",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.100",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.41",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.10",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/ec9289369259d982e735a71437e32e6b4035290c"
            },
            {
               "url": "https://git.kernel.org/stable/c/d3179bae72b1b5e555ba839d6d9f40a350a4d78a"
            },
            {
               "url": "https://git.kernel.org/stable/c/b26525b2183632f16a3a4108fe6a4bfa8afac6ed"
            },
            {
               "url": "https://git.kernel.org/stable/c/12e009d60852f7bce0afc373ca0b320f14150418"
            }
         ],
         "title": "cachefiles: wait for ondemand_object_worker to finish when dropping object",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-41051",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}