{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52560",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-52560"
  ],
  "published": "2024-03-02T22:00:33Z",
  "summary": "mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()\n\nWhen CONFIG_DAMON_VADDR_KUNIT_TEST=y and making CONFIG_DEBUG_KMEMLEAK=y\nand CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y, the below memory leak is detected.\n\nSince commit 9f86d624292c (\"mm/damon/vaddr-test: remove unnecessary\nvariables\"), the damon_destroy_ctx() is removed, but still call\ndamon_new_target() and damon_new_region(), the damon_region which is\nallocated by kmem_cache_alloc() in damon_new_region() and the damon_target\nwhich is allocated by kmalloc in damon_new_target() are not freed.  And\nthe damon_region which is allocated in damon_new_region() in\ndamon_set_regions() is also not freed.\n\nSo use damon_destroy_target to free all the damon_regions and damon_target.\n\n    unreferenced object 0xffff888107c9a940 (size 64):\n      comm \"kunit_try_catch\", pid 1069, jiffies 4294670592 (age 732.761s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 06 00 00 00 6b 6b 6b 6b  ............kkkk\n        60 c7 9c 07 81 88 ff ff f8 cb 9c 07 81 88 ff ff  `...............\n      backtrace:\n        [<ffffffff817e0167>] kmalloc_trace+0x27/0xa0\n        [<ffffffff819c11cf>] damon_new_target+0x3f/0x1b0\n        [<ffffffff819c7d55>] damon_do_test_apply_three_regions.constprop.0+0x95/0x3e0\n        [<ffffffff819c82be>] damon_test_apply_three_regions1+0x21e/0x260\n        [<ffffffff829fce6a>] kunit_generic_run_threadfn_adapter+0x4a/0x90\n        [<ffffffff81237cf6>] kthread+0x2b6/0x380\n        [<ffffffff81097add>] ret_from_fork+0x2d/0x70\n        [<ffffffff81003791>] ret_from_fork_asm+0x11/0x20\n    unreferenced object 0xffff8881079cc740 (size 56):\n      comm \"kunit_try_catch\", pid 1069, jiffies 4294670592 (age 732.761s)\n      hex dump (first 32 bytes):\n        05 00 00 00 00 00 00 00 14 00 00 00 00 00 00 00  ................\n        6b 6b 6b 6b 6b 6b 6b 6b 00 00 00 00 6b 6b 6b 6b  kkkkkkkk....kkkk\n      backtrace:\n        [<ffffffff819bc492>] damon_new_region+0x22/0x1c0\n        [<ffffffff819c7d91>] damon_do_test_apply_three_regions.constprop.0+0xd1/0x3e0\n        [<ffffffff819c82be>] damon_test_apply_three_regions1+0x21e/0x260\n        [<ffffffff829fce6a>] kunit_generic_run_threadfn_adapter+0x4a/0x90\n        [<ffffffff81237cf6>] kthread+0x2b6/0x380\n        [<ffffffff81097add>] ret_from_fork+0x2d/0x70\n        [<ffffffff81003791>] ret_from_fork_asm+0x11/0x20\n    unreferenced object 0xffff888107c9ac40 (size 64):\n      comm \"kunit_try_catch\", pid 1071, jiffies 4294670595 (age 732.843s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 06 00 00 00 6b 6b 6b 6b  ............kkkk\n        a0 cc 9c 07 81 88 ff ff 78 a1 76 07 81 88 ff ff  ........x.v.....\n      backtrace:\n        [<ffffffff817e0167>] kmalloc_trace+0x27/0xa0\n        [<ffffffff819c11cf>] damon_new_target+0x3f/0x1b0\n        [<ffffffff819c7d55>] damon_do_test_apply_three_regions.constprop.0+0x95/0x3e0\n        [<ffffffff819c851e>] damon_test_apply_three_regions2+0x21e/0x260\n        [<ffffffff829fce6a>] kunit_generic_run_threadfn_adapter+0x4a/0x90\n        [<ffffffff81237cf6>] kthread+0x2b6/0x380\n        [<ffffffff81097add>] ret_from_fork+0x2d/0x70\n        [<ffffffff81003791>] ret_from_fork_asm+0x11/0x20\n    unreferenced object 0xffff8881079ccc80 (size 56):\n      comm \"kunit_try_catch\", pid 1071, jiffies 4294670595 (age 732.843s)\n      hex dump (first 32 bytes):\n        05 00 00 00 00 00 00 00 14 00 00 00 00 00 00 00  ................\n        6b 6b 6b 6b 6b 6b 6b 6b 00 00 00 00 6b 6b 6b 6b  kkkkkkkk....kkkk\n      backtrace:\n        [<ffffffff819bc492>] damon_new_region+0x22/0x1c0\n        [<ffffffff819c7d91>] damon_do_test_apply_three_regions.constprop.0+0xd1/0x3e0\n        [<ffffffff819c851e>] damon_test_apply_three_regions2+0x21e/0x260\n        [<ffffffff829fce6a>] kunit_generic_run_threadfn_adapter+0x4a/0x90\n        [<ffffffff81237cf6>] kthread+0x2b6/0x380\n        [<ffffffff81097add>] ret_from_fork+0x2d/0x70\n        [<ffff\n---truncated---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.56",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52560"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9a4fe81a8644b717d57d81ce5849e16583b13fe8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6b522001693aa113d97a985abc5f6932972e8e86"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/45120b15743fa7c0aa53d5db6dfb4c8f87be4abd"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}