{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/deadline: Fix task_struct reference leak\n\nDuring the execution of the following stress test with linux-rt:\n\nstress-ng --cyclic 30 --timeout 30 --minimize --quiet\n\nkmemleak frequently reported a memory leak concerning the task_struct:\n\nunreferenced object 0xffff8881305b8000 (size 16136):\n  comm \"stress-ng\", pid 614, jiffies 4294883961 (age 286.412s)\n  object hex dump (first 32 bytes):\n    02 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00  .@..............\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  debug hex dump (first 16 bytes):\n    53 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00  S...............\n  backtrace:\n    [<00000000046b6790>] dup_task_struct+0x30/0x540\n    [<00000000c5ca0f0b>] copy_process+0x3d9/0x50e0\n    [<00000000ced59777>] kernel_clone+0xb0/0x770\n    [<00000000a50befdc>] __do_sys_clone+0xb6/0xf0\n    [<000000001dbf2008>] do_syscall_64+0x5d/0xf0\n    [<00000000552900ff>] entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nThe issue occurs in start_dl_timer(), which increments the task_struct\nreference count and sets a timer. The timer callback, dl_task_timer,\nis supposed to decrement the reference count upon expiration. However,\nif enqueue_task_dl() is called before the timer expires and cancels it,\nthe reference count is not decremented, leading to the leak.\n\nThis patch fixes the reference leak by ensuring the task_struct\nreference count is properly decremented when the timer is canceled."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/sched/deadline.c"
               ],
               "versions": [
                  {
                     "version": "feff2e65efd8",
                     "lessThan": "7a54d31face6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "feff2e65efd8",
                     "lessThan": "b58652db66c9",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/sched/deadline.c"
               ],
               "versions": [
                  {
                     "version": "5.10",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.10",
                     "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/7a54d31face626f62de415ebe77b43f76c3ffaf4"
            },
            {
               "url": "https://git.kernel.org/stable/c/b58652db66c910c2245f5bee7deca41c12d707b9"
            }
         ],
         "title": "sched/deadline: Fix task_struct reference leak",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-41023",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}