{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-43322",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43322",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-08T13:31:07.436Z",
    "updatedAt": "2026-08-05T12:27:13.066Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Bluetooth: hci_sync: Fix UAF in le_read_features_complete",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Fix UAF in le_read_features_complete\n\nThis fixes the following backtrace caused by hci_conn being freed\nbefore le_read_features_complete but after\nhci_le_read_remote_features_sync so hci_conn_del -> hci_cmd_sync_dequeue\nis not able to prevent it:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]\nBUG: KASAN: slab-use-after-free in atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline]\nBUG: KASAN: slab-use-after-free in hci_conn_drop include/net/bluetooth/hci_core.h:1688 [inline]\nBUG: KASAN: slab-use-after-free in le_read_features_complete+0x5b/0x340 net/bluetooth/hci_sync.c:7344\nWrite of size 4 at addr ffff8880796b0010 by task kworker/u9:0/52\n\nCPU: 0 UID: 0 PID: 52 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025\nWorkqueue: hci0 hci_cmd_sync_work\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xcd/0x630 mm/kasan/report.c:482\n kasan_report+0xe0/0x110 mm/kasan/report.c:595\n check_region_inline mm/kasan/generic.c:194 [inline]\n kasan_check_range+0x100/0x1b0 mm/kasan/generic.c:200\n instrument_atomic_read_write include/linux/instrumented.h:96 [inline]\n atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline]\n hci_conn_drop include/net/bluetooth/hci_core.h:1688 [inline]\n le_read_features_complete+0x5b/0x340 net/bluetooth/hci_sync.c:7344\n hci_cmd_sync_work+0x1ff/0x430 net/bluetooth/hci_sync.c:334\n process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257\n process_scheduled_works kernel/workqueue.c:3340 [inline]\n worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421\n kthread+0x3c5/0x780 kernel/kthread.c:463\n ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246\n </TASK>\n\nAllocated by task 5932:\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:56\n kasan_save_track+0x14/0x30 mm/kasan/common.c:77\n poison_kmalloc_redzone mm/kasan/common.c:400 [inline]\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417\n kmalloc_noprof include/linux/slab.h:957 [inline]\n kzalloc_noprof include/linux/slab.h:1094 [inline]\n __hci_conn_add+0xf8/0x1c70 net/bluetooth/hci_conn.c:963\n hci_conn_add_unset+0x76/0x100 net/bluetooth/hci_conn.c:1084\n le_conn_complete_evt+0x639/0x1f20 net/bluetooth/hci_event.c:5714\n hci_le_enh_conn_complete_evt+0x23d/0x380 net/bluetooth/hci_event.c:5861\n hci_le_meta_evt+0x357/0x5e0 net/bluetooth/hci_event.c:7408\n hci_event_func net/bluetooth/hci_event.c:7716 [inline]\n hci_event_packet+0x685/0x11c0 net/bluetooth/hci_event.c:7773\n hci_rx_work+0x2c9/0xeb0 net/bluetooth/hci_core.c:4076\n process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257\n process_scheduled_works kernel/workqueue.c:3340 [inline]\n worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421\n kthread+0x3c5/0x780 kernel/kthread.c:463\n ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246\n\nFreed by task 5932:\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:56\n kasan_save_track+0x14/0x30 mm/kasan/common.c:77\n __kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:587\n kasan_save_free_info mm/kasan/kasan.h:406 [inline]\n poison_slab_object mm/kasan/common.c:252 [inline]\n __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:284\n kasan_slab_free include/linux/kasan.h:234 [inline]\n slab_free_hook mm/slub.c:2540 [inline]\n slab_free mm/slub.c:6663 [inline]\n kfree+0x2f8/0x6e0 mm/slub.c:6871\n device_release+0xa4/0x240 drivers/base/core.c:2565\n kobject_cleanup lib/kobject.c:689 [inline]\n kobject_release lib/kobject.c:720 [inline]\n kref_put include/linux/kref.h:65 [inline]\n kobject_put+0x1e7/0x590 lib/kobject.\n---truncated---",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a106e50be74b0896583f4d010a69f9806e4194f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "260dc2be643b4a35b27008490c533613e3e53867"
            },
            {
              "version": "a106e50be74b0896583f4d010a69f9806e4194f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "035c25007c9e698bef3826070ee34bb6d778020c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}