{"id":"CVE-2023-53594","title":"driver core: fix resource leak in device_add()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: fix resource leak in device_add()\n\nWhen calling kobject_add() failed in device_add(), it will call\ncleanup_glue_dir() to free resource. But in kobject_add(…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < 8d389e363075c2e1deb84a560686ea92123e4b8b","Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < d1dbff10c6cd3b43457f3efd3c9c4950009635bf","Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < f39d21154db87545d8f0b25d13c326f37cc32239","Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < 6977b1a5d67097eaa4d02b0c126c04cc6e8917c0","Linux e7f6e3c9db4b6f259c89fd05728d024ab32acd71","Linux a93a63333dbdb182b87e8cc99df8b4474f867acb","Linux 37de955c11b59050346e530143c20b10b4846527","Linux 645897231f960590220144b06d1f994b7eb88326","Linux >= 3.10.105 < 3.11","Linux >= 3.12.70 < 3.13","Linux >= 4.4.40 < 4.5","Linux >= 4.8.16 < 4.9","Linux 4.9"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:24:49.348431Z"},"published":"2025-10-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:31:16.299Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53594","references":[{"url":"https://git.kernel.org/stable/c/8d389e363075c2e1deb84a560686ea92123e4b8b"},{"url":"https://git.kernel.org/stable/c/d1dbff10c6cd3b43457f3efd3c9c4950009635bf"},{"url":"https://git.kernel.org/stable/c/f39d21154db87545d8f0b25d13c326f37cc32239"},{"url":"https://git.kernel.org/stable/c/6977b1a5d67097eaa4d02b0c126c04cc6e8917c0"}],"tags":["cve.org"],"epss":0.00148,"epssPercentile":0.04029,"ingestedAt":"2026-11-05T22:38:31.814Z","slug":"CVE-2023-53594","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: fix resource leak in device_add()\n\nWhen calling kobject_add() failed in device_add(), it will call\ncleanup_glue_dir() to free resource. But in kobject_add(),\ndev->kobj.parent has been set to NULL. This will cause resource leak.\n\nThe process is as follows:\ndevice_add()\n\tget_device_parent()\n\t\tclass_dir_create_and_add()\n\t\t\tkobject_add()\t\t//kobject_get()\n\t...\n\tdev->kobj.parent = kobj;\n\t...\n\tkobject_add()\t\t//failed, but set dev->kobj.parent = NULL\n\t...\n\tglue_dir = get_glue_dir(dev)\t//glue_dir = NULL, and goto\n\t\t\t\t\t//\"Error\" label\n\t...\n\tcleanup_glue_dir()\t//becaues glue_dir is NULL, not call\n\t\t\t\t//kobject_put()\n\nThe preceding problem may cause insmod mac80211_hwsim.ko to failed.\nsysfs: cannot create duplicate filename '/devices/virtual/mac80211_hwsim'\nCall Trace:\n<TASK>\ndump_stack_lvl+0x8e/0xd1\nsysfs_warn_dup.cold+0x1c/0x29\nsysfs_create_dir_ns+0x224/0x280\nkobject_add_internal+0x2aa/0x880\nkobject_add+0x135/0x1a0\nget_device_parent+0x3d7/0x590\ndevice_add+0x2aa/0x1cb0\ndevice_create_groups_vargs+0x1eb/0x260\ndevice_create+0xdc/0x110\nmac80211_hwsim_new_radio+0x31e/0x4790 [mac80211_hwsim]\ninit_mac80211_hwsim+0x48d/0x1000 [mac80211_hwsim]\ndo_one_initcall+0x10f/0x630\ndo_init_module+0x19f/0x5e0\nload_module+0x64b7/0x6eb0\n__do_sys_finit_module+0x140/0x200\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\n</TASK>\nkobject_add_internal failed for mac80211_hwsim with -EEXIST, don't try to\nregister things with the same name in the same directory.\n\n## Affected\n\n- `Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < 8d389e363075c2e1deb84a560686ea92123e4b8b`\n- `Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < d1dbff10c6cd3b43457f3efd3c9c4950009635bf`\n- `Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < f39d21154db87545d8f0b25d13c326f37cc32239`\n- `Linux >= cebf8fd16900fdfd58c0028617944f808f97fe50 < 6977b1a5d67097eaa4d02b0c126c04cc6e8917c0`\n- `Linux e7f6e3c9db4b6f259c89fd05728d024ab32acd71`\n- `Linux a93a63333dbdb182b87e8cc99df8b4474f867acb`\n- `Linux 37de955c11b59050346e530143c20b10b4846527`\n- `Linux 645897231f960590220144b06d1f994b7eb88326`\n- `Linux >= 3.10.105 < 3.11`\n- `Linux >= 3.12.70 < 3.13`\n- `Linux >= 4.4.40 < 4.5`\n- `Linux >= 4.8.16 < 4.9`\n- `Linux 4.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}