{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-52560",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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---"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "9f86d624292c",
                                            "version_value": "9a4fe81a8644"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.16",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.16",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.56",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.5.6",
                                                        "lessThanOrEqual": "6.5.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/9a4fe81a8644b717d57d81ce5849e16583b13fe8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/9a4fe81a8644b717d57d81ce5849e16583b13fe8"
            },
            {
                "url": "https://git.kernel.org/stable/c/6b522001693aa113d97a985abc5f6932972e8e86",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6b522001693aa113d97a985abc5f6932972e8e86"
            },
            {
                "url": "https://git.kernel.org/stable/c/45120b15743fa7c0aa53d5db6dfb4c8f87be4abd",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/45120b15743fa7c0aa53d5db6dfb4c8f87be4abd"
            }
        ]
    },
    "generator": {
        "engine": "bippy-9e1c9544281a"
    }
}