CVE-2023-53235 (GCVE-0-2023-53235)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:22 – Updated: 2026-01-14 18:02
VLAI?
Title
drm/tests: helpers: Avoid a driver uaf
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/tests: helpers: Avoid a driver uaf when using __drm_kunit_helper_alloc_drm_device() the driver may be dereferenced by device-managed resources up until the device is freed, which is typically later than the kunit-managed resource code frees it. Fix this by simply make the driver device-managed as well. In short, the sequence leading to the UAF is as follows: INIT: Code allocates a struct device as a kunit-managed resource. Code allocates a drm driver as a kunit-managed resource. Code allocates a drm device as a device-managed resource. EXIT: Kunit resource cleanup frees the drm driver Kunit resource cleanup puts the struct device, which starts a device-managed resource cleanup device-managed cleanup calls drm_dev_put() drm_dev_put() dereferences the (now freed) drm driver -> Boom. Related KASAN message: [55272.551542] ================================================================== [55272.551551] BUG: KASAN: slab-use-after-free in drm_dev_put.part.0+0xd4/0xe0 [drm] [55272.551603] Read of size 8 at addr ffff888127502828 by task kunit_try_catch/10353 [55272.551612] CPU: 4 PID: 10353 Comm: kunit_try_catch Tainted: G U N 6.5.0-rc7+ #155 [55272.551620] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 0403 01/26/2021 [55272.551626] Call Trace: [55272.551629] <TASK> [55272.551633] dump_stack_lvl+0x57/0x90 [55272.551639] print_report+0xcf/0x630 [55272.551645] ? _raw_spin_lock_irqsave+0x5f/0x70 [55272.551652] ? drm_dev_put.part.0+0xd4/0xe0 [drm] [55272.551694] kasan_report+0xd7/0x110 [55272.551699] ? drm_dev_put.part.0+0xd4/0xe0 [drm] [55272.551742] drm_dev_put.part.0+0xd4/0xe0 [drm] [55272.551783] devres_release_all+0x15d/0x1f0 [55272.551790] ? __pfx_devres_release_all+0x10/0x10 [55272.551797] device_unbind_cleanup+0x16/0x1a0 [55272.551802] device_release_driver_internal+0x3e5/0x540 [55272.551808] ? kobject_put+0x5d/0x4b0 [55272.551814] bus_remove_device+0x1f1/0x3f0 [55272.551819] device_del+0x342/0x910 [55272.551826] ? __pfx_device_del+0x10/0x10 [55272.551830] ? lock_release+0x339/0x5e0 [55272.551836] ? kunit_remove_resource+0x128/0x290 [kunit] [55272.551845] ? __pfx_lock_release+0x10/0x10 [55272.551851] platform_device_del.part.0+0x1f/0x1e0 [55272.551856] ? _raw_spin_unlock_irqrestore+0x30/0x60 [55272.551863] kunit_remove_resource+0x195/0x290 [kunit] [55272.551871] ? _raw_spin_unlock_irqrestore+0x30/0x60 [55272.551877] kunit_cleanup+0x78/0x120 [kunit] [55272.551885] ? __kthread_parkme+0xc1/0x1f0 [55272.551891] ? __pfx_kunit_try_run_case_cleanup+0x10/0x10 [kunit] [55272.551900] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [kunit] [55272.551909] kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit] [55272.551919] kthread+0x2e7/0x3c0 [55272.551924] ? __pfx_kthread+0x10/0x10 [55272.551929] ret_from_fork+0x2d/0x70 [55272.551935] ? __pfx_kthread+0x10/0x10 [55272.551940] ret_from_fork_asm+0x1b/0x30 [55272.551948] </TASK> [55272.551953] Allocated by task 10351: [55272.551956] kasan_save_stack+0x1c/0x40 [55272.551962] kasan_set_track+0x21/0x30 [55272.551966] __kasan_kmalloc+0x8b/0x90 [55272.551970] __kmalloc+0x5e/0x160 [55272.551976] kunit_kmalloc_array+0x1c/0x50 [kunit] [55272.551984] drm_exec_test_init+0xfa/0x2c0 [drm_exec_test] [55272.551991] kunit_try_run_case+0xdd/0x250 [kunit] [55272.551999] kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit] [55272.552008] kthread+0x2e7/0x3c0 [55272.552012] ret_from_fork+0x2d/0x70 [55272.552017] ret_from_fork_asm+0x1b/0x30 [55272.552024] Freed by task 10353: [55272.552027] kasan_save_stack+0x1c/0x40 [55272.552032] kasan_set_track+0x21/0x30 [55272.552036] kasan_save_free_info+0x27/0x40 [55272.552041] __kasan_slab_free+0x106/0x180 [55272.552046] slab_free_freelist_hook+0xb3/0x160 [55272.552051] __kmem_cache_free+0xb2/0x290 [55272.552056] kunit_remove_resource+0x195/0x290 [kunit] [55272.552064] kunit_cleanup+0x7 ---truncated---
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d98780310719bf4076d975c2ff65c44c7c0d929e , < c9d8be0e533738b744abb669263c4750d4830009 (git)
Affected: d98780310719bf4076d975c2ff65c44c7c0d929e , < 139a27854bf5ce93ff9805f9f7683b88c13074dc (git)
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    Linux Linux Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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{
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
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                  "versionStartIncluding": "6.3",
                  "vulnerable": true
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/tests: helpers: Avoid a driver uaf\n\nwhen using __drm_kunit_helper_alloc_drm_device() the driver may be\ndereferenced by device-managed resources up until the device is\nfreed, which is typically later than the kunit-managed resource code\nfrees it. Fix this by simply make the driver device-managed as well.\n\nIn short, the sequence leading to the UAF is as follows:\n\nINIT:\nCode allocates a struct device as a kunit-managed resource.\nCode allocates a drm driver as a kunit-managed resource.\nCode allocates a drm device as a device-managed resource.\n\nEXIT:\nKunit resource cleanup frees the drm driver\nKunit resource cleanup puts the struct device, which starts a\n      device-managed resource cleanup\ndevice-managed cleanup calls drm_dev_put()\ndrm_dev_put() dereferences the (now freed) drm driver -\u003e Boom.\n\nRelated KASAN message:\n[55272.551542] ==================================================================\n[55272.551551] BUG: KASAN: slab-use-after-free in drm_dev_put.part.0+0xd4/0xe0 [drm]\n[55272.551603] Read of size 8 at addr ffff888127502828 by task kunit_try_catch/10353\n\n[55272.551612] CPU: 4 PID: 10353 Comm: kunit_try_catch Tainted: G     U           N 6.5.0-rc7+ #155\n[55272.551620] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 0403 01/26/2021\n[55272.551626] Call Trace:\n[55272.551629]  \u003cTASK\u003e\n[55272.551633]  dump_stack_lvl+0x57/0x90\n[55272.551639]  print_report+0xcf/0x630\n[55272.551645]  ? _raw_spin_lock_irqsave+0x5f/0x70\n[55272.551652]  ? drm_dev_put.part.0+0xd4/0xe0 [drm]\n[55272.551694]  kasan_report+0xd7/0x110\n[55272.551699]  ? drm_dev_put.part.0+0xd4/0xe0 [drm]\n[55272.551742]  drm_dev_put.part.0+0xd4/0xe0 [drm]\n[55272.551783]  devres_release_all+0x15d/0x1f0\n[55272.551790]  ? __pfx_devres_release_all+0x10/0x10\n[55272.551797]  device_unbind_cleanup+0x16/0x1a0\n[55272.551802]  device_release_driver_internal+0x3e5/0x540\n[55272.551808]  ? kobject_put+0x5d/0x4b0\n[55272.551814]  bus_remove_device+0x1f1/0x3f0\n[55272.551819]  device_del+0x342/0x910\n[55272.551826]  ? __pfx_device_del+0x10/0x10\n[55272.551830]  ? lock_release+0x339/0x5e0\n[55272.551836]  ? kunit_remove_resource+0x128/0x290 [kunit]\n[55272.551845]  ? __pfx_lock_release+0x10/0x10\n[55272.551851]  platform_device_del.part.0+0x1f/0x1e0\n[55272.551856]  ? _raw_spin_unlock_irqrestore+0x30/0x60\n[55272.551863]  kunit_remove_resource+0x195/0x290 [kunit]\n[55272.551871]  ? _raw_spin_unlock_irqrestore+0x30/0x60\n[55272.551877]  kunit_cleanup+0x78/0x120 [kunit]\n[55272.551885]  ? __kthread_parkme+0xc1/0x1f0\n[55272.551891]  ? __pfx_kunit_try_run_case_cleanup+0x10/0x10 [kunit]\n[55272.551900]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [kunit]\n[55272.551909]  kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit]\n[55272.551919]  kthread+0x2e7/0x3c0\n[55272.551924]  ? __pfx_kthread+0x10/0x10\n[55272.551929]  ret_from_fork+0x2d/0x70\n[55272.551935]  ? __pfx_kthread+0x10/0x10\n[55272.551940]  ret_from_fork_asm+0x1b/0x30\n[55272.551948]  \u003c/TASK\u003e\n\n[55272.551953] Allocated by task 10351:\n[55272.551956]  kasan_save_stack+0x1c/0x40\n[55272.551962]  kasan_set_track+0x21/0x30\n[55272.551966]  __kasan_kmalloc+0x8b/0x90\n[55272.551970]  __kmalloc+0x5e/0x160\n[55272.551976]  kunit_kmalloc_array+0x1c/0x50 [kunit]\n[55272.551984]  drm_exec_test_init+0xfa/0x2c0 [drm_exec_test]\n[55272.551991]  kunit_try_run_case+0xdd/0x250 [kunit]\n[55272.551999]  kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit]\n[55272.552008]  kthread+0x2e7/0x3c0\n[55272.552012]  ret_from_fork+0x2d/0x70\n[55272.552017]  ret_from_fork_asm+0x1b/0x30\n\n[55272.552024] Freed by task 10353:\n[55272.552027]  kasan_save_stack+0x1c/0x40\n[55272.552032]  kasan_set_track+0x21/0x30\n[55272.552036]  kasan_save_free_info+0x27/0x40\n[55272.552041]  __kasan_slab_free+0x106/0x180\n[55272.552046]  slab_free_freelist_hook+0xb3/0x160\n[55272.552051]  __kmem_cache_free+0xb2/0x290\n[55272.552056]  kunit_remove_resource+0x195/0x290 [kunit]\n[55272.552064]  kunit_cleanup+0x7\n---truncated---"
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      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:22:08.322Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/c9d8be0e533738b744abb669263c4750d4830009"
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        {
          "url": "https://git.kernel.org/stable/c/139a27854bf5ce93ff9805f9f7683b88c13074dc"
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      ],
      "title": "drm/tests: helpers: Avoid a driver uaf",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53235",
    "datePublished": "2025-09-15T14:22:08.322Z",
    "dateReserved": "2025-09-15T14:19:21.847Z",
    "dateUpdated": "2026-01-14T18:02:49.816Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53235\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T17:56:14.212932Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T17:56:10.219Z\"}}], \"cna\": {\"title\": \"drm/tests: helpers: Avoid a driver uaf\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d98780310719bf4076d975c2ff65c44c7c0d929e\", \"lessThan\": \"c9d8be0e533738b744abb669263c4750d4830009\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d98780310719bf4076d975c2ff65c44c7c0d929e\", \"lessThan\": \"139a27854bf5ce93ff9805f9f7683b88c13074dc\", \"versionType\": \"git\"}], \"programFiles\": [\"include/drm/drm_kunit_helpers.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.3\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.3\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.5.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/drm/drm_kunit_helpers.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c9d8be0e533738b744abb669263c4750d4830009\"}, {\"url\": \"https://git.kernel.org/stable/c/139a27854bf5ce93ff9805f9f7683b88c13074dc\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/tests: helpers: Avoid a driver uaf\\n\\nwhen using __drm_kunit_helper_alloc_drm_device() the driver may be\\ndereferenced by device-managed resources up until the device is\\nfreed, which is typically later than the kunit-managed resource code\\nfrees it. Fix this by simply make the driver device-managed as well.\\n\\nIn short, the sequence leading to the UAF is as follows:\\n\\nINIT:\\nCode allocates a struct device as a kunit-managed resource.\\nCode allocates a drm driver as a kunit-managed resource.\\nCode allocates a drm device as a device-managed resource.\\n\\nEXIT:\\nKunit resource cleanup frees the drm driver\\nKunit resource cleanup puts the struct device, which starts a\\n      device-managed resource cleanup\\ndevice-managed cleanup calls drm_dev_put()\\ndrm_dev_put() dereferences the (now freed) drm driver -\u003e Boom.\\n\\nRelated KASAN message:\\n[55272.551542] ==================================================================\\n[55272.551551] BUG: KASAN: slab-use-after-free in drm_dev_put.part.0+0xd4/0xe0 [drm]\\n[55272.551603] Read of size 8 at addr ffff888127502828 by task kunit_try_catch/10353\\n\\n[55272.551612] CPU: 4 PID: 10353 Comm: kunit_try_catch Tainted: G     U           N 6.5.0-rc7+ #155\\n[55272.551620] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 0403 01/26/2021\\n[55272.551626] Call Trace:\\n[55272.551629]  \u003cTASK\u003e\\n[55272.551633]  dump_stack_lvl+0x57/0x90\\n[55272.551639]  print_report+0xcf/0x630\\n[55272.551645]  ? _raw_spin_lock_irqsave+0x5f/0x70\\n[55272.551652]  ? drm_dev_put.part.0+0xd4/0xe0 [drm]\\n[55272.551694]  kasan_report+0xd7/0x110\\n[55272.551699]  ? drm_dev_put.part.0+0xd4/0xe0 [drm]\\n[55272.551742]  drm_dev_put.part.0+0xd4/0xe0 [drm]\\n[55272.551783]  devres_release_all+0x15d/0x1f0\\n[55272.551790]  ? __pfx_devres_release_all+0x10/0x10\\n[55272.551797]  device_unbind_cleanup+0x16/0x1a0\\n[55272.551802]  device_release_driver_internal+0x3e5/0x540\\n[55272.551808]  ? kobject_put+0x5d/0x4b0\\n[55272.551814]  bus_remove_device+0x1f1/0x3f0\\n[55272.551819]  device_del+0x342/0x910\\n[55272.551826]  ? __pfx_device_del+0x10/0x10\\n[55272.551830]  ? lock_release+0x339/0x5e0\\n[55272.551836]  ? kunit_remove_resource+0x128/0x290 [kunit]\\n[55272.551845]  ? __pfx_lock_release+0x10/0x10\\n[55272.551851]  platform_device_del.part.0+0x1f/0x1e0\\n[55272.551856]  ? _raw_spin_unlock_irqrestore+0x30/0x60\\n[55272.551863]  kunit_remove_resource+0x195/0x290 [kunit]\\n[55272.551871]  ? _raw_spin_unlock_irqrestore+0x30/0x60\\n[55272.551877]  kunit_cleanup+0x78/0x120 [kunit]\\n[55272.551885]  ? __kthread_parkme+0xc1/0x1f0\\n[55272.551891]  ? __pfx_kunit_try_run_case_cleanup+0x10/0x10 [kunit]\\n[55272.551900]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [kunit]\\n[55272.551909]  kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit]\\n[55272.551919]  kthread+0x2e7/0x3c0\\n[55272.551924]  ? __pfx_kthread+0x10/0x10\\n[55272.551929]  ret_from_fork+0x2d/0x70\\n[55272.551935]  ? __pfx_kthread+0x10/0x10\\n[55272.551940]  ret_from_fork_asm+0x1b/0x30\\n[55272.551948]  \u003c/TASK\u003e\\n\\n[55272.551953] Allocated by task 10351:\\n[55272.551956]  kasan_save_stack+0x1c/0x40\\n[55272.551962]  kasan_set_track+0x21/0x30\\n[55272.551966]  __kasan_kmalloc+0x8b/0x90\\n[55272.551970]  __kmalloc+0x5e/0x160\\n[55272.551976]  kunit_kmalloc_array+0x1c/0x50 [kunit]\\n[55272.551984]  drm_exec_test_init+0xfa/0x2c0 [drm_exec_test]\\n[55272.551991]  kunit_try_run_case+0xdd/0x250 [kunit]\\n[55272.551999]  kunit_generic_run_threadfn_adapter+0x4a/0x90 [kunit]\\n[55272.552008]  kthread+0x2e7/0x3c0\\n[55272.552012]  ret_from_fork+0x2d/0x70\\n[55272.552017]  ret_from_fork_asm+0x1b/0x30\\n\\n[55272.552024] Freed by task 10353:\\n[55272.552027]  kasan_save_stack+0x1c/0x40\\n[55272.552032]  kasan_set_track+0x21/0x30\\n[55272.552036]  kasan_save_free_info+0x27/0x40\\n[55272.552041]  __kasan_slab_free+0x106/0x180\\n[55272.552046]  slab_free_freelist_hook+0xb3/0x160\\n[55272.552051]  __kmem_cache_free+0xb2/0x290\\n[55272.552056]  kunit_remove_resource+0x195/0x290 [kunit]\\n[55272.552064]  kunit_cleanup+0x7\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.5\", \"versionStartIncluding\": \"6.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6\", \"versionStartIncluding\": \"6.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-15T14:22:08.322Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53235\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:02:49.816Z\", \"dateReserved\": \"2025-09-15T14:19:21.847Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-15T14:22:08.322Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.