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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm\n\nCurrently there is no synchronisation between finalize_pkvm() and\nkvm_arm_init() initcalls. The finalize_pkvm() proceeds happily even if\nkvm_arm_init() fails resulting in the following warning on all the CPUs\nand eventually a HYP panic:\n\n  | kvm [1]: IPA Size Limit: 48 bits\n  | kvm [1]: Failed to init hyp memory protection\n  | kvm [1]: error initializing Hyp mode: -22\n  |\n  | \u003csnip\u003e\n  |\n  | WARNING: CPU: 0 PID: 0 at arch/arm64/kvm/pkvm.c:226 _kvm_host_prot_finalize+0x30/0x50\n  | Modules linked in:\n  | CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0 #237\n  | Hardware name: FVP Base RevC (DT)\n  | pstate: 634020c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\n  | pc : _kvm_host_prot_finalize+0x30/0x50\n  | lr : __flush_smp_call_function_queue+0xd8/0x230\n  |\n  | Call trace:\n  |  _kvm_host_prot_finalize+0x3c/0x50\n  |  on_each_cpu_cond_mask+0x3c/0x6c\n  |  pkvm_drop_host_privileges+0x4c/0x78\n  |  finalize_pkvm+0x3c/0x5c\n  |  do_one_initcall+0xcc/0x240\n  |  do_initcall_level+0x8c/0xac\n  |  do_initcalls+0x54/0x94\n  |  do_basic_setup+0x1c/0x28\n  |  kernel_init_freeable+0x100/0x16c\n  |  kernel_init+0x20/0x1a0\n  |  ret_from_fork+0x10/0x20\n  | Failed to finalize Hyp protection: -22\n  |     dtb=fvp-base-revc.dtb\n  | kvm [95]: nVHE hyp BUG at: arch/arm64/kvm/hyp/nvhe/mem_protect.c:540!\n  | kvm [95]: nVHE call trace:\n  | kvm [95]:  [\u003cffff800081052984\u003e] __kvm_nvhe_hyp_panic+0xac/0xf8\n  | kvm [95]:  [\u003cffff800081059644\u003e] __kvm_nvhe_handle_host_mem_abort+0x1a0/0x2ac\n  | kvm [95]:  [\u003cffff80008105511c\u003e] __kvm_nvhe_handle_trap+0x4c/0x160\n  | kvm [95]:  [\u003cffff8000810540fc\u003e] __kvm_nvhe___skip_pauth_save+0x4/0x4\n  | kvm [95]: ---[ end nVHE call trace ]---\n  | kvm [95]: Hyp Offset: 0xfffe8db00ffa0000\n  | Kernel panic - not syncing: HYP panic:\n  | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800\n  | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000\n  | VCPU:0000000000000000\n  | CPU: 3 PID: 95 Comm: kworker/u16:2 Tainted: G        W          6.4.0 #237\n  | Hardware name: FVP Base RevC (DT)\n  | Workqueue: rpciod rpc_async_schedule\n  | Call trace:\n  |  dump_backtrace+0xec/0x108\n  |  show_stack+0x18/0x2c\n  |  dump_stack_lvl+0x50/0x68\n  |  dump_stack+0x18/0x24\n  |  panic+0x138/0x33c\n  |  nvhe_hyp_panic_handler+0x100/0x184\n  |  new_slab+0x23c/0x54c\n  |  ___slab_alloc+0x3e4/0x770\n  |  kmem_cache_alloc_node+0x1f0/0x278\n  |  __alloc_skb+0xdc/0x294\n  |  tcp_stream_alloc_skb+0x2c/0xf0\n  |  tcp_sendmsg_locked+0x3d0/0xda4\n  |  tcp_sendmsg+0x38/0x5c\n  |  inet_sendmsg+0x44/0x60\n  |  sock_sendmsg+0x1c/0x34\n  |  xprt_sock_sendmsg+0xdc/0x274\n  |  xs_tcp_send_request+0x1ac/0x28c\n  |  xprt_transmit+0xcc/0x300\n  |  call_transmit+0x78/0x90\n  |  __rpc_execute+0x114/0x3d8\n  |  rpc_async_schedule+0x28/0x48\n  |  process_one_work+0x1d8/0x314\n  |  worker_thread+0x248/0x474\n  |  kthread+0xfc/0x184\n  |  ret_from_fork+0x10/0x20\n  | SMP: stopping secondary CPUs\n  | Kernel Offset: 0x57c5cb460000 from 0xffff800080000000\n  | PHYS_OFFSET: 0x80000000\n  | CPU features: 0x00000000,1035b7a3,ccfe773f\n  | Memory Limit: none\n  | ---[ end Kernel panic - not syncing: HYP panic:\n  | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800\n  | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000\n  | VCPU:0000000000000000 ]---\n\nFix it by checking for the successfull initialisation of kvm_arm_init()\nin finalize_pkvm() before proceeding any futher."
    }
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  "id": "CVE-2023-53319",
  "lastModified": "2025-12-01T21:22:28.760",
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix WARNING in mb_find_extent\n\nSyzbot found the following issue:\n\nEXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!\nEXT4-fs (loop0): orphan cleanup on readonly fs\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 5067 at fs/ext4/mballoc.c:1869 mb_find_extent+0x8a1/0xe30\nModules linked in:\nCPU: 1 PID: 5067 Comm: syz-executor307 Not tainted 6.2.0-rc1-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\nRIP: 0010:mb_find_extent+0x8a1/0xe30 fs/ext4/mballoc.c:1869\nRSP: 0018:ffffc90003c9e098 EFLAGS: 00010293\nRAX: ffffffff82405731 RBX: 0000000000000041 RCX: ffff8880783457c0\nRDX: 0000000000000000 RSI: 0000000000000041 RDI: 0000000000000040\nRBP: 0000000000000040 R08: ffffffff82405723 R09: ffffed10053c9402\nR10: ffffed10053c9402 R11: 1ffff110053c9401 R12: 0000000000000000\nR13: ffffc90003c9e538 R14: dffffc0000000000 R15: ffffc90003c9e2cc\nFS:  0000555556665300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000056312f6796f8 CR3: 0000000022437000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ext4_mb_complex_scan_group+0x353/0x1100 fs/ext4/mballoc.c:2307\n ext4_mb_regular_allocator+0x1533/0x3860 fs/ext4/mballoc.c:2735\n ext4_mb_new_blocks+0xddf/0x3db0 fs/ext4/mballoc.c:5605\n ext4_ext_map_blocks+0x1868/0x6880 fs/ext4/extents.c:4286\n ext4_map_blocks+0xa49/0x1cc0 fs/ext4/inode.c:651\n ext4_getblk+0x1b9/0x770 fs/ext4/inode.c:864\n ext4_bread+0x2a/0x170 fs/ext4/inode.c:920\n ext4_quota_write+0x225/0x570 fs/ext4/super.c:7105\n write_blk fs/quota/quota_tree.c:64 [inline]\n get_free_dqblk+0x34a/0x6d0 fs/quota/quota_tree.c:130\n do_insert_tree+0x26b/0x1aa0 fs/quota/quota_tree.c:340\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n dq_insert_tree fs/quota/quota_tree.c:401 [inline]\n qtree_write_dquot+0x3b6/0x530 fs/quota/quota_tree.c:420\n v2_write_dquot+0x11b/0x190 fs/quota/quota_v2.c:358\n dquot_acquire+0x348/0x670 fs/quota/dquot.c:444\n ext4_acquire_dquot+0x2dc/0x400 fs/ext4/super.c:6740\n dqget+0x999/0xdc0 fs/quota/dquot.c:914\n __dquot_initialize+0x3d0/0xcf0 fs/quota/dquot.c:1492\n ext4_process_orphan+0x57/0x2d0 fs/ext4/orphan.c:329\n ext4_orphan_cleanup+0xb60/0x1340 fs/ext4/orphan.c:474\n __ext4_fill_super fs/ext4/super.c:5516 [inline]\n ext4_fill_super+0x81cd/0x8700 fs/ext4/super.c:5644\n get_tree_bdev+0x400/0x620 fs/super.c:1282\n vfs_get_tree+0x88/0x270 fs/super.c:1489\n do_new_mount+0x289/0xad0 fs/namespace.c:3145\n do_mount fs/namespace.c:3488 [inline]\n __do_sys_mount fs/namespace.c:3697 [inline]\n __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAdd some debug information:\nmb_find_extent: mb_find_extent block=41, order=0 needed=64 next=0 ex=0/41/1@3735929054 64 64 7\nblock_bitmap: ff 3f 0c 00 fc 01 00 00 d2 3d 00 00 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n\nAcctually, blocks per group is 64, but block bitmap indicate at least has\n128 blocks. Now, ext4_validate_block_bitmap() didn\u0027t check invalid block\u0027s\nbitmap if set.\nTo resolve above issue, add check like fsck \"Padding at end of block bitmap is\nnot set\"."
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  ],
  "id": "CVE-2023-53317",
  "lastModified": "2025-12-01T21:23:28.940",
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: avoid hci_dev_test_and_set_flag() in mgmt_init_hdev()\n\nsyzbot is again reporting attempt to cancel uninitialized work\nat mgmt_index_removed() [1], for setting of HCI_MGMT flag from\nmgmt_init_hdev() from hci_mgmt_cmd() from hci_sock_sendmsg() can\nrace with testing of HCI_MGMT flag from mgmt_index_removed() from\nhci_sock_bind() due to lack of serialization via hci_dev_lock().\n\nSince mgmt_init_hdev() is called with mgmt_chan_list_lock held, we can\nsafely split hci_dev_test_and_set_flag() into hci_dev_test_flag() and\nhci_dev_set_flag(). Thus, in order to close this race, set HCI_MGMT flag\nafter INIT_DELAYED_WORK() completed.\n\nThis is a local fix based on mgmt_chan_list_lock. Lack of serialization\nvia hci_dev_lock() might be causing different race conditions somewhere\nelse. But a global fix based on hci_dev_lock() should deserve a future\npatch."
    }
  ],
  "id": "CVE-2022-50339",
  "lastModified": "2025-12-01T22:00:43.643",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-16T17:15:32.647",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e53c6180db8dd09de94e0a3bdf4fef6f5f9dd6e6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f74ca25d6d6629ffd4fd80a1a73037253b57d06b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}