CVE-2025-39981 (GCVE-0-2025-39981)
Vulnerability from cvelistv5
Published
2025-10-15 07:56
Modified
2025-10-15 07:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix possible UAFs This attemps to fix possible UAFs caused by struct mgmt_pending being freed while still being processed like in the following trace, in order to fix mgmt_pending_valid is introduce and use to check if the mgmt_pending hasn't been removed from the pending list, on the complete callbacks it is used to check and in addtion remove the cmd from the list while holding mgmt_pending_lock to avoid TOCTOU problems since if the cmd is left on the list it can still be accessed and freed. BUG: KASAN: slab-use-after-free in mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223 Read of size 8 at addr ffff8880709d4dc0 by task kworker/u11:0/55 CPU: 0 UID: 0 PID: 55 Comm: kworker/u11:0 Not tainted 6.16.4 #2 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223 hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16.4/arch/x86/entry/entry_64.S:245 </TASK> Allocated by task 12210: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4364 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] mgmt_pending_new+0x65/0x1e0 net/bluetooth/mgmt_util.c:269 mgmt_pending_add+0x35/0x140 net/bluetooth/mgmt_util.c:296 __add_adv_patterns_monitor+0x130/0x200 net/bluetooth/mgmt.c:5247 add_adv_patterns_monitor+0x214/0x360 net/bluetooth/mgmt.c:5364 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:729 sock_write_iter+0x258/0x330 net/socket.c:1133 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 12221: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4648 [inline] kfree+0x18e/0x440 mm/slub.c:4847 mgmt_pending_free net/bluetooth/mgmt_util.c:311 [inline] mgmt_pending_foreach+0x30d/0x380 net/bluetooth/mgmt_util.c:257 __mgmt_power_off+0x169/0x350 net/bluetooth/mgmt.c:9444 hci_dev_close_sync+0x754/0x1330 net/bluetooth/hci_sync.c:5290 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline] hci_dev_close+0x108/0x200 net/bluetooth/hci_core.c:526 sock_do_ioctl+0xd9/0x300 net/socket.c:1192 sock_ioctl+0x576/0x790 net/socket.c:1313 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/302a1f674c00dd5581ab8e493ef44767c5101aab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87a1f16f07c6c43771754075e08f45b41d237421
Impacted products
Vendor Product Version
Linux Linux Version: cf75ad8b41d2aa06f98f365d42a3ae8b059daddd
Version: cf75ad8b41d2aa06f98f365d42a3ae8b059daddd
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   Linux Linux Version: 5.17
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/mgmt.c",
            "net/bluetooth/mgmt_util.c",
            "net/bluetooth/mgmt_util.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "87a1f16f07c6c43771754075e08f45b41d237421",
              "status": "affected",
              "version": "cf75ad8b41d2aa06f98f365d42a3ae8b059daddd",
              "versionType": "git"
            },
            {
              "lessThan": "302a1f674c00dd5581ab8e493ef44767c5101aab",
              "status": "affected",
              "version": "cf75ad8b41d2aa06f98f365d42a3ae8b059daddd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/mgmt.c",
            "net/bluetooth/mgmt_util.c",
            "net/bluetooth/mgmt_util.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.10",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix possible UAFs\n\nThis attemps to fix possible UAFs caused by struct mgmt_pending being\nfreed while still being processed like in the following trace, in order\nto fix mgmt_pending_valid is introduce and use to check if the\nmgmt_pending hasn\u0027t been removed from the pending list, on the complete\ncallbacks it is used to check and in addtion remove the cmd from the list\nwhile holding mgmt_pending_lock to avoid TOCTOU problems since if the cmd\nis left on the list it can still be accessed and freed.\n\nBUG: KASAN: slab-use-after-free in mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223\nRead of size 8 at addr ffff8880709d4dc0 by task kworker/u11:0/55\n\nCPU: 0 UID: 0 PID: 55 Comm: kworker/u11:0 Not tainted 6.16.4 #2 PREEMPT(full)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014\nWorkqueue: hci0 hci_cmd_sync_work\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xca/0x240 mm/kasan/report.c:482\n kasan_report+0x118/0x150 mm/kasan/report.c:595\n mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223\n hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332\n process_one_work kernel/workqueue.c:3238 [inline]\n process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321\n worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402\n kthread+0x711/0x8a0 kernel/kthread.c:464\n ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148\n ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16.4/arch/x86/entry/entry_64.S:245\n \u003c/TASK\u003e\n\nAllocated by task 12210:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3e/0x80 mm/kasan/common.c:68\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394\n kasan_kmalloc include/linux/kasan.h:260 [inline]\n __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4364\n kmalloc_noprof include/linux/slab.h:905 [inline]\n kzalloc_noprof include/linux/slab.h:1039 [inline]\n mgmt_pending_new+0x65/0x1e0 net/bluetooth/mgmt_util.c:269\n mgmt_pending_add+0x35/0x140 net/bluetooth/mgmt_util.c:296\n __add_adv_patterns_monitor+0x130/0x200 net/bluetooth/mgmt.c:5247\n add_adv_patterns_monitor+0x214/0x360 net/bluetooth/mgmt.c:5364\n hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719\n hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839\n sock_sendmsg_nosec net/socket.c:714 [inline]\n __sock_sendmsg+0x219/0x270 net/socket.c:729\n sock_write_iter+0x258/0x330 net/socket.c:1133\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0x5c9/0xb30 fs/read_write.c:686\n ksys_write+0x145/0x250 fs/read_write.c:738\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 12221:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3e/0x80 mm/kasan/common.c:68\n kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576\n poison_slab_object mm/kasan/common.c:247 [inline]\n __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264\n kasan_slab_free include/linux/kasan.h:233 [inline]\n slab_free_hook mm/slub.c:2381 [inline]\n slab_free mm/slub.c:4648 [inline]\n kfree+0x18e/0x440 mm/slub.c:4847\n mgmt_pending_free net/bluetooth/mgmt_util.c:311 [inline]\n mgmt_pending_foreach+0x30d/0x380 net/bluetooth/mgmt_util.c:257\n __mgmt_power_off+0x169/0x350 net/bluetooth/mgmt.c:9444\n hci_dev_close_sync+0x754/0x1330 net/bluetooth/hci_sync.c:5290\n hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]\n hci_dev_close+0x108/0x200 net/bluetooth/hci_core.c:526\n sock_do_ioctl+0xd9/0x300 net/socket.c:1192\n sock_ioctl+0x576/0x790 net/socket.c:1313\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:907 [inline]\n __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xf\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-15T07:56:00.959Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/87a1f16f07c6c43771754075e08f45b41d237421"
        },
        {
          "url": "https://git.kernel.org/stable/c/302a1f674c00dd5581ab8e493ef44767c5101aab"
        }
      ],
      "title": "Bluetooth: MGMT: Fix possible UAFs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39981",
    "datePublished": "2025-10-15T07:56:00.959Z",
    "dateReserved": "2025-04-16T07:20:57.150Z",
    "dateUpdated": "2025-10-15T07:56:00.959Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39981\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-15T08:15:36.017\",\"lastModified\":\"2025-10-16T15:29:11.563\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: MGMT: Fix possible UAFs\\n\\nThis attemps to fix possible UAFs caused by struct mgmt_pending being\\nfreed while still being processed like in the following trace, in order\\nto fix mgmt_pending_valid is introduce and use to check if the\\nmgmt_pending hasn\u0027t been removed from the pending list, on the complete\\ncallbacks it is used to check and in addtion remove the cmd from the list\\nwhile holding mgmt_pending_lock to avoid TOCTOU problems since if the cmd\\nis left on the list it can still be accessed and freed.\\n\\nBUG: KASAN: slab-use-after-free in mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223\\nRead of size 8 at addr ffff8880709d4dc0 by task kworker/u11:0/55\\n\\nCPU: 0 UID: 0 PID: 55 Comm: kworker/u11:0 Not tainted 6.16.4 #2 PREEMPT(full)\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014\\nWorkqueue: hci0 hci_cmd_sync_work\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120\\n print_address_description mm/kasan/report.c:378 [inline]\\n print_report+0xca/0x240 mm/kasan/report.c:482\\n kasan_report+0x118/0x150 mm/kasan/report.c:595\\n mgmt_add_adv_patterns_monitor_sync+0x35/0x50 net/bluetooth/mgmt.c:5223\\n hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332\\n process_one_work kernel/workqueue.c:3238 [inline]\\n process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321\\n worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402\\n kthread+0x711/0x8a0 kernel/kthread.c:464\\n ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148\\n ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16.4/arch/x86/entry/entry_64.S:245\\n \u003c/TASK\u003e\\n\\nAllocated by task 12210:\\n kasan_save_stack mm/kasan/common.c:47 [inline]\\n kasan_save_track+0x3e/0x80 mm/kasan/common.c:68\\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\\n __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394\\n kasan_kmalloc include/linux/kasan.h:260 [inline]\\n __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4364\\n kmalloc_noprof include/linux/slab.h:905 [inline]\\n kzalloc_noprof include/linux/slab.h:1039 [inline]\\n mgmt_pending_new+0x65/0x1e0 net/bluetooth/mgmt_util.c:269\\n mgmt_pending_add+0x35/0x140 net/bluetooth/mgmt_util.c:296\\n __add_adv_patterns_monitor+0x130/0x200 net/bluetooth/mgmt.c:5247\\n add_adv_patterns_monitor+0x214/0x360 net/bluetooth/mgmt.c:5364\\n hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719\\n hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n __sock_sendmsg+0x219/0x270 net/socket.c:729\\n sock_write_iter+0x258/0x330 net/socket.c:1133\\n new_sync_write fs/read_write.c:593 [inline]\\n vfs_write+0x5c9/0xb30 fs/read_write.c:686\\n ksys_write+0x145/0x250 fs/read_write.c:738\\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFreed by task 12221:\\n kasan_save_stack mm/kasan/common.c:47 [inline]\\n kasan_save_track+0x3e/0x80 mm/kasan/common.c:68\\n kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576\\n poison_slab_object mm/kasan/common.c:247 [inline]\\n __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264\\n kasan_slab_free include/linux/kasan.h:233 [inline]\\n slab_free_hook mm/slub.c:2381 [inline]\\n slab_free mm/slub.c:4648 [inline]\\n kfree+0x18e/0x440 mm/slub.c:4847\\n mgmt_pending_free net/bluetooth/mgmt_util.c:311 [inline]\\n mgmt_pending_foreach+0x30d/0x380 net/bluetooth/mgmt_util.c:257\\n __mgmt_power_off+0x169/0x350 net/bluetooth/mgmt.c:9444\\n hci_dev_close_sync+0x754/0x1330 net/bluetooth/hci_sync.c:5290\\n hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]\\n hci_dev_close+0x108/0x200 net/bluetooth/hci_core.c:526\\n sock_do_ioctl+0xd9/0x300 net/socket.c:1192\\n sock_ioctl+0x576/0x790 net/socket.c:1313\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:907 [inline]\\n __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893\\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n do_syscall_64+0xf\\n---truncated---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/302a1f674c00dd5581ab8e493ef44767c5101aab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87a1f16f07c6c43771754075e08f45b41d237421\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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