CVE-2022-48918 (GCVE-0-2022-48918)

Vulnerability from cvelistv5 – Published: 2024-08-22 01:32 – Updated: 2025-05-04 08:26
VLAI?
Title
iwlwifi: mvm: check debugfs_dir ptr before use
Summary
In the Linux kernel, the following vulnerability has been resolved: iwlwifi: mvm: check debugfs_dir ptr before use When "debugfs=off" is used on the kernel command line, iwiwifi's mvm module uses an invalid/unchecked debugfs_dir pointer and causes a BUG: BUG: kernel NULL pointer dereference, address: 000000000000004f #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 503 Comm: modprobe Tainted: G W 5.17.0-rc5 #7 Hardware name: Dell Inc. Inspiron 15 5510/076F7Y, BIOS 2.4.1 11/05/2021 RIP: 0010:iwl_mvm_dbgfs_register+0x692/0x700 [iwlmvm] Code: 69 a0 be 80 01 00 00 48 c7 c7 50 73 6a a0 e8 95 cf ee e0 48 8b 83 b0 1e 00 00 48 c7 c2 54 73 6a a0 be 64 00 00 00 48 8d 7d 8c <48> 8b 48 50 e8 15 22 07 e1 48 8b 43 28 48 8d 55 8c 48 c7 c7 5f 73 RSP: 0018:ffffc90000a0ba68 EFLAGS: 00010246 RAX: ffffffffffffffff RBX: ffff88817d6e3328 RCX: ffff88817d6e3328 RDX: ffffffffa06a7354 RSI: 0000000000000064 RDI: ffffc90000a0ba6c RBP: ffffc90000a0bae0 R08: ffffffff824e4880 R09: ffffffffa069d620 R10: ffffc90000a0ba00 R11: ffffffffffffffff R12: 0000000000000000 R13: ffffc90000a0bb28 R14: ffff88817d6e3328 R15: ffff88817d6e3320 FS: 00007f64dd92d740(0000) GS:ffff88847f640000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000004f CR3: 000000016fc79001 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: <TASK> ? iwl_mvm_mac_setup_register+0xbdc/0xda0 [iwlmvm] iwl_mvm_start_post_nvm+0x71/0x100 [iwlmvm] iwl_op_mode_mvm_start+0xab8/0xb30 [iwlmvm] _iwl_op_mode_start+0x6f/0xd0 [iwlwifi] iwl_opmode_register+0x6a/0xe0 [iwlwifi] ? 0xffffffffa0231000 iwl_mvm_init+0x35/0x1000 [iwlmvm] ? 0xffffffffa0231000 do_one_initcall+0x5a/0x1b0 ? kmem_cache_alloc+0x1e5/0x2f0 ? do_init_module+0x1e/0x220 do_init_module+0x48/0x220 load_module+0x2602/0x2bc0 ? __kernel_read+0x145/0x2e0 ? kernel_read_file+0x229/0x290 __do_sys_finit_module+0xc5/0x130 ? __do_sys_finit_module+0xc5/0x130 __x64_sys_finit_module+0x13/0x20 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f64dda564dd Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1b 29 0f 00 f7 d8 64 89 01 48 RSP: 002b:00007ffdba393f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64dda564dd RDX: 0000000000000000 RSI: 00005575399e2ab2 RDI: 0000000000000001 RBP: 000055753a91c5e0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000001 R11: 0000000000000246 R12: 00005575399e2ab2 R13: 000055753a91ceb0 R14: 0000000000000000 R15: 000055753a923018 </TASK> Modules linked in: btintel(+) btmtk bluetooth vfat snd_hda_codec_hdmi fat snd_hda_codec_realtek snd_hda_codec_generic iwlmvm(+) snd_sof_pci_intel_tgl mac80211 snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence soundwire_bus snd_sof_intel_hda snd_sof_pci snd_sof snd_sof_xtensa_dsp snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core btrfs snd_compress snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec raid6_pq iwlwifi snd_hda_core snd_pcm snd_timer snd soundcore cfg80211 intel_ish_ipc(+) thunderbolt rfkill intel_ishtp ucsi_acpi wmi i2c_hid_acpi i2c_hid evdev CR2: 000000000000004f ---[ end trace 0000000000000000 ]--- Check the debugfs_dir pointer for an error before using it. [change to make both conditional]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8c082a99edb997d7999eb7cdb648e47a2bf4a638 , < 7de1ed755e1ace30d97a724bad32452ed86b653b (git)
Affected: 8c082a99edb997d7999eb7cdb648e47a2bf4a638 , < fe51975ff13831e794e1bcd0039b305dcad3d7ba (git)
Affected: 8c082a99edb997d7999eb7cdb648e47a2bf4a638 , < 5a6248c0a22352f09ea041665d3bd3e18f6f872c (git)
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    Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.27 , ≤ 5.15.* (semver)
Unaffected: 5.16.13 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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                "id": "CVE-2022-48918",
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                "timestamp": "2024-09-10T15:33:38.078569Z",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niwlwifi: mvm: check debugfs_dir ptr before use\n\nWhen \"debugfs=off\" is used on the kernel command line, iwiwifi\u0027s\nmvm module uses an invalid/unchecked debugfs_dir pointer and causes\na BUG:\n\n BUG: kernel NULL pointer dereference, address: 000000000000004f\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP\n CPU: 1 PID: 503 Comm: modprobe Tainted: G        W         5.17.0-rc5 #7\n Hardware name: Dell Inc. Inspiron 15 5510/076F7Y, BIOS 2.4.1 11/05/2021\n RIP: 0010:iwl_mvm_dbgfs_register+0x692/0x700 [iwlmvm]\n Code: 69 a0 be 80 01 00 00 48 c7 c7 50 73 6a a0 e8 95 cf ee e0 48 8b 83 b0 1e 00 00 48 c7 c2 54 73 6a a0 be 64 00 00 00 48 8d 7d 8c \u003c48\u003e 8b 48 50 e8 15 22 07 e1 48 8b 43 28 48 8d 55 8c 48 c7 c7 5f 73\n RSP: 0018:ffffc90000a0ba68 EFLAGS: 00010246\n RAX: ffffffffffffffff RBX: ffff88817d6e3328 RCX: ffff88817d6e3328\n RDX: ffffffffa06a7354 RSI: 0000000000000064 RDI: ffffc90000a0ba6c\n RBP: ffffc90000a0bae0 R08: ffffffff824e4880 R09: ffffffffa069d620\n R10: ffffc90000a0ba00 R11: ffffffffffffffff R12: 0000000000000000\n R13: ffffc90000a0bb28 R14: ffff88817d6e3328 R15: ffff88817d6e3320\n FS:  00007f64dd92d740(0000) GS:ffff88847f640000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000000000004f CR3: 000000016fc79001 CR4: 0000000000770ee0\n PKRU: 55555554\n Call Trace:\n  \u003cTASK\u003e\n  ? iwl_mvm_mac_setup_register+0xbdc/0xda0 [iwlmvm]\n  iwl_mvm_start_post_nvm+0x71/0x100 [iwlmvm]\n  iwl_op_mode_mvm_start+0xab8/0xb30 [iwlmvm]\n  _iwl_op_mode_start+0x6f/0xd0 [iwlwifi]\n  iwl_opmode_register+0x6a/0xe0 [iwlwifi]\n  ? 0xffffffffa0231000\n  iwl_mvm_init+0x35/0x1000 [iwlmvm]\n  ? 0xffffffffa0231000\n  do_one_initcall+0x5a/0x1b0\n  ? kmem_cache_alloc+0x1e5/0x2f0\n  ? do_init_module+0x1e/0x220\n  do_init_module+0x48/0x220\n  load_module+0x2602/0x2bc0\n  ? __kernel_read+0x145/0x2e0\n  ? kernel_read_file+0x229/0x290\n  __do_sys_finit_module+0xc5/0x130\n  ? __do_sys_finit_module+0xc5/0x130\n  __x64_sys_finit_module+0x13/0x20\n  do_syscall_64+0x38/0x90\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7f64dda564dd\n Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1b 29 0f 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffdba393f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64dda564dd\n RDX: 0000000000000000 RSI: 00005575399e2ab2 RDI: 0000000000000001\n RBP: 000055753a91c5e0 R08: 0000000000000000 R09: 0000000000000002\n R10: 0000000000000001 R11: 0000000000000246 R12: 00005575399e2ab2\n R13: 000055753a91ceb0 R14: 0000000000000000 R15: 000055753a923018\n  \u003c/TASK\u003e\n Modules linked in: btintel(+) btmtk bluetooth vfat snd_hda_codec_hdmi fat snd_hda_codec_realtek snd_hda_codec_generic iwlmvm(+) snd_sof_pci_intel_tgl mac80211 snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence soundwire_bus snd_sof_intel_hda snd_sof_pci snd_sof snd_sof_xtensa_dsp snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core btrfs snd_compress snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec raid6_pq iwlwifi snd_hda_core snd_pcm snd_timer snd soundcore cfg80211 intel_ish_ipc(+) thunderbolt rfkill intel_ishtp ucsi_acpi wmi i2c_hid_acpi i2c_hid evdev\n CR2: 000000000000004f\n ---[ end trace 0000000000000000 ]---\n\nCheck the debugfs_dir pointer for an error before using it.\n\n[change to make both conditional]"
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      "title": "iwlwifi: mvm: check debugfs_dir ptr before use",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48918",
    "datePublished": "2024-08-22T01:32:33.271Z",
    "dateReserved": "2024-08-21T06:06:23.295Z",
    "dateUpdated": "2025-05-04T08:26:05.222Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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    "vulnrichment": {
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Inspiron 15 5510/076F7Y, BIOS 2.4.1 11/05/2021\\n RIP: 0010:iwl_mvm_dbgfs_register+0x692/0x700 [iwlmvm]\\n Code: 69 a0 be 80 01 00 00 48 c7 c7 50 73 6a a0 e8 95 cf ee e0 48 8b 83 b0 1e 00 00 48 c7 c2 54 73 6a a0 be 64 00 00 00 48 8d 7d 8c \u003c48\u003e 8b 48 50 e8 15 22 07 e1 48 8b 43 28 48 8d 55 8c 48 c7 c7 5f 73\\n RSP: 0018:ffffc90000a0ba68 EFLAGS: 00010246\\n RAX: ffffffffffffffff RBX: ffff88817d6e3328 RCX: ffff88817d6e3328\\n RDX: ffffffffa06a7354 RSI: 0000000000000064 RDI: ffffc90000a0ba6c\\n RBP: ffffc90000a0bae0 R08: ffffffff824e4880 R09: ffffffffa069d620\\n R10: ffffc90000a0ba00 R11: ffffffffffffffff R12: 0000000000000000\\n R13: ffffc90000a0bb28 R14: ffff88817d6e3328 R15: ffff88817d6e3320\\n FS:  00007f64dd92d740(0000) GS:ffff88847f640000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000000000000004f CR3: 000000016fc79001 CR4: 0000000000770ee0\\n PKRU: 55555554\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? iwl_mvm_mac_setup_register+0xbdc/0xda0 [iwlmvm]\\n  iwl_mvm_start_post_nvm+0x71/0x100 [iwlmvm]\\n  iwl_op_mode_mvm_start+0xab8/0xb30 [iwlmvm]\\n  _iwl_op_mode_start+0x6f/0xd0 [iwlwifi]\\n  iwl_opmode_register+0x6a/0xe0 [iwlwifi]\\n  ? 0xffffffffa0231000\\n  iwl_mvm_init+0x35/0x1000 [iwlmvm]\\n  ? 0xffffffffa0231000\\n  do_one_initcall+0x5a/0x1b0\\n  ? kmem_cache_alloc+0x1e5/0x2f0\\n  ? do_init_module+0x1e/0x220\\n  do_init_module+0x48/0x220\\n  load_module+0x2602/0x2bc0\\n  ? __kernel_read+0x145/0x2e0\\n  ? kernel_read_file+0x229/0x290\\n  __do_sys_finit_module+0xc5/0x130\\n  ? __do_sys_finit_module+0xc5/0x130\\n  __x64_sys_finit_module+0x13/0x20\\n  do_syscall_64+0x38/0x90\\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\\n RIP: 0033:0x7f64dda564dd\\n Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1b 29 0f 00 f7 d8 64 89 01 48\\n RSP: 002b:00007ffdba393f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\\n RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64dda564dd\\n RDX: 0000000000000000 RSI: 00005575399e2ab2 RDI: 0000000000000001\\n RBP: 000055753a91c5e0 R08: 0000000000000000 R09: 0000000000000002\\n R10: 0000000000000001 R11: 0000000000000246 R12: 00005575399e2ab2\\n R13: 000055753a91ceb0 R14: 0000000000000000 R15: 000055753a923018\\n  \u003c/TASK\u003e\\n Modules linked in: btintel(+) btmtk bluetooth vfat snd_hda_codec_hdmi fat snd_hda_codec_realtek snd_hda_codec_generic iwlmvm(+) snd_sof_pci_intel_tgl mac80211 snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence soundwire_bus snd_sof_intel_hda snd_sof_pci snd_sof snd_sof_xtensa_dsp snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core btrfs snd_compress snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec raid6_pq iwlwifi snd_hda_core snd_pcm snd_timer snd soundcore cfg80211 intel_ish_ipc(+) thunderbolt rfkill intel_ishtp ucsi_acpi wmi i2c_hid_acpi i2c_hid evdev\\n CR2: 000000000000004f\\n ---[ end trace 0000000000000000 ]---\\n\\nCheck the debugfs_dir pointer for an error before using it.\\n\\n[change to make both conditional]\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-08-22T03:31:02.081Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48918\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-09-12T17:33:01.314Z\", \"dateReserved\": \"2024-08-21T06:06:23.295Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T01:32:33.271Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • 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.