CVE-2022-49465 (GCVE-0-2022-49465)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-01-19 12:17
VLAI?
Title
blk-throttle: Set BIO_THROTTLED when bio has been throttled
Summary
In the Linux kernel, the following vulnerability has been resolved: blk-throttle: Set BIO_THROTTLED when bio has been throttled 1.In current process, all bio will set the BIO_THROTTLED flag after __blk_throtl_bio(). 2.If bio needs to be throttled, it will start the timer and stop submit bio directly. Bio will submit in blk_throtl_dispatch_work_fn() when the timer expires.But in the current process, if bio is throttled. The BIO_THROTTLED will be set to bio after timer start. If the bio has been completed, it may cause use-after-free blow. BUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70 Read of size 2 at addr ffff88801b8902d4 by task fio/26380 dump_stack+0x9b/0xce print_address_description.constprop.6+0x3e/0x60 kasan_report.cold.9+0x22/0x3a blk_throtl_bio+0x12f0/0x2c70 submit_bio_checks+0x701/0x1550 submit_bio_noacct+0x83/0xc80 submit_bio+0xa7/0x330 mpage_readahead+0x380/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Allocated by task 26380: kasan_save_stack+0x19/0x40 __kasan_kmalloc.constprop.2+0xc1/0xd0 kmem_cache_alloc+0x146/0x440 mempool_alloc+0x125/0x2f0 bio_alloc_bioset+0x353/0x590 mpage_alloc+0x3b/0x240 do_mpage_readpage+0xddf/0x1ef0 mpage_readahead+0x264/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 0: kasan_save_stack+0x19/0x40 kasan_set_track+0x1c/0x30 kasan_set_free_info+0x1b/0x30 __kasan_slab_free+0x111/0x160 kmem_cache_free+0x94/0x460 mempool_free+0xd6/0x320 bio_free+0xe0/0x130 bio_put+0xab/0xe0 bio_endio+0x3a6/0x5d0 blk_update_request+0x590/0x1370 scsi_end_request+0x7d/0x400 scsi_io_completion+0x1aa/0xe50 scsi_softirq_done+0x11b/0x240 blk_mq_complete_request+0xd4/0x120 scsi_mq_done+0xf0/0x200 virtscsi_vq_done+0xbc/0x150 vring_interrupt+0x179/0x390 __handle_irq_event_percpu+0xf7/0x490 handle_irq_event_percpu+0x7b/0x160 handle_irq_event+0xcc/0x170 handle_edge_irq+0x215/0xb20 common_interrupt+0x60/0x120 asm_common_interrupt+0x1e/0x40 Fix this by move BIO_THROTTLED set into the queue_lock.
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: 2a0f61e6ecd08d260054bde4b096ff207ce5350f , < 24ba80efaf6e772f6132465fad08e20fb4767da7 (git)
Affected: 2a0f61e6ecd08d260054bde4b096ff207ce5350f , < 047ea38d41d90d748bca812a43339632f52ba715 (git)
Affected: 2a0f61e6ecd08d260054bde4b096ff207ce5350f , < 0cfc8a0fb07cde61915e4a77c4794c47de3114a4 (git)
Affected: 2a0f61e6ecd08d260054bde4b096ff207ce5350f , < 935fa666534d7b7185e8c6b0191cd06281be4290 (git)
Affected: 2a0f61e6ecd08d260054bde4b096ff207ce5350f , < 5a011f889b4832aa80c2a872a5aade5c48d2756f (git)
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    Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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              "confidentialityImpact": "HIGH",
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              "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",
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              "version": "5.18.3",
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-throttle: Set BIO_THROTTLED when bio has been throttled\n\n1.In current process, all bio will set the BIO_THROTTLED flag\nafter __blk_throtl_bio().\n\n2.If bio needs to be throttled, it will start the timer and\nstop submit bio directly. Bio will submit in\nblk_throtl_dispatch_work_fn() when the timer expires.But in\nthe current process, if bio is throttled. The BIO_THROTTLED\nwill be set to bio after timer start. If the bio has been\ncompleted, it may cause use-after-free blow.\n\nBUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70\nRead of size 2 at addr ffff88801b8902d4 by task fio/26380\n\n dump_stack+0x9b/0xce\n print_address_description.constprop.6+0x3e/0x60\n kasan_report.cold.9+0x22/0x3a\n blk_throtl_bio+0x12f0/0x2c70\n submit_bio_checks+0x701/0x1550\n submit_bio_noacct+0x83/0xc80\n submit_bio+0xa7/0x330\n mpage_readahead+0x380/0x500\n read_pages+0x1c1/0xbf0\n page_cache_ra_unbounded+0x471/0x6f0\n do_page_cache_ra+0xda/0x110\n ondemand_readahead+0x442/0xae0\n page_cache_async_ra+0x210/0x300\n generic_file_buffered_read+0x4d9/0x2130\n generic_file_read_iter+0x315/0x490\n blkdev_read_iter+0x113/0x1b0\n aio_read+0x2ad/0x450\n io_submit_one+0xc8e/0x1d60\n __se_sys_io_submit+0x125/0x350\n do_syscall_64+0x2d/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nAllocated by task 26380:\n kasan_save_stack+0x19/0x40\n __kasan_kmalloc.constprop.2+0xc1/0xd0\n kmem_cache_alloc+0x146/0x440\n mempool_alloc+0x125/0x2f0\n bio_alloc_bioset+0x353/0x590\n mpage_alloc+0x3b/0x240\n do_mpage_readpage+0xddf/0x1ef0\n mpage_readahead+0x264/0x500\n read_pages+0x1c1/0xbf0\n page_cache_ra_unbounded+0x471/0x6f0\n do_page_cache_ra+0xda/0x110\n ondemand_readahead+0x442/0xae0\n page_cache_async_ra+0x210/0x300\n generic_file_buffered_read+0x4d9/0x2130\n generic_file_read_iter+0x315/0x490\n blkdev_read_iter+0x113/0x1b0\n aio_read+0x2ad/0x450\n io_submit_one+0xc8e/0x1d60\n __se_sys_io_submit+0x125/0x350\n do_syscall_64+0x2d/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nFreed by task 0:\n kasan_save_stack+0x19/0x40\n kasan_set_track+0x1c/0x30\n kasan_set_free_info+0x1b/0x30\n __kasan_slab_free+0x111/0x160\n kmem_cache_free+0x94/0x460\n mempool_free+0xd6/0x320\n bio_free+0xe0/0x130\n bio_put+0xab/0xe0\n bio_endio+0x3a6/0x5d0\n blk_update_request+0x590/0x1370\n scsi_end_request+0x7d/0x400\n scsi_io_completion+0x1aa/0xe50\n scsi_softirq_done+0x11b/0x240\n blk_mq_complete_request+0xd4/0x120\n scsi_mq_done+0xf0/0x200\n virtscsi_vq_done+0xbc/0x150\n vring_interrupt+0x179/0x390\n __handle_irq_event_percpu+0xf7/0x490\n handle_irq_event_percpu+0x7b/0x160\n handle_irq_event+0xcc/0x170\n handle_edge_irq+0x215/0xb20\n common_interrupt+0x60/0x120\n asm_common_interrupt+0x1e/0x40\n\nFix this by move BIO_THROTTLED set into the queue_lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-19T12:17:39.645Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/24ba80efaf6e772f6132465fad08e20fb4767da7"
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        {
          "url": "https://git.kernel.org/stable/c/047ea38d41d90d748bca812a43339632f52ba715"
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          "url": "https://git.kernel.org/stable/c/0cfc8a0fb07cde61915e4a77c4794c47de3114a4"
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          "url": "https://git.kernel.org/stable/c/935fa666534d7b7185e8c6b0191cd06281be4290"
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        {
          "url": "https://git.kernel.org/stable/c/5a011f889b4832aa80c2a872a5aade5c48d2756f"
        }
      ],
      "title": "blk-throttle: Set BIO_THROTTLED when bio has been throttled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49465",
    "datePublished": "2025-02-26T02:13:10.975Z",
    "dateReserved": "2025-02-26T02:08:31.577Z",
    "dateUpdated": "2026-01-19T12:17:39.645Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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    "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-2022-49465\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:16:02.824581Z\"}}}], \"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\": \"2025-02-27T18:16:04.138Z\"}}], \"cna\": {\"title\": \"blk-throttle: Set BIO_THROTTLED when bio has been throttled\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2a0f61e6ecd08d260054bde4b096ff207ce5350f\", \"lessThan\": \"24ba80efaf6e772f6132465fad08e20fb4767da7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2a0f61e6ecd08d260054bde4b096ff207ce5350f\", \"lessThan\": \"047ea38d41d90d748bca812a43339632f52ba715\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2a0f61e6ecd08d260054bde4b096ff207ce5350f\", \"lessThan\": \"0cfc8a0fb07cde61915e4a77c4794c47de3114a4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2a0f61e6ecd08d260054bde4b096ff207ce5350f\", \"lessThan\": \"935fa666534d7b7185e8c6b0191cd06281be4290\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2a0f61e6ecd08d260054bde4b096ff207ce5350f\", \"lessThan\": \"5a011f889b4832aa80c2a872a5aade5c48d2756f\", \"versionType\": \"git\"}], \"programFiles\": [\"block/blk-throttle.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.248\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"block/blk-throttle.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/24ba80efaf6e772f6132465fad08e20fb4767da7\"}, {\"url\": \"https://git.kernel.org/stable/c/047ea38d41d90d748bca812a43339632f52ba715\"}, {\"url\": \"https://git.kernel.org/stable/c/0cfc8a0fb07cde61915e4a77c4794c47de3114a4\"}, {\"url\": \"https://git.kernel.org/stable/c/935fa666534d7b7185e8c6b0191cd06281be4290\"}, {\"url\": \"https://git.kernel.org/stable/c/5a011f889b4832aa80c2a872a5aade5c48d2756f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblk-throttle: Set BIO_THROTTLED when bio has been throttled\\n\\n1.In current process, all bio will set the BIO_THROTTLED flag\\nafter __blk_throtl_bio().\\n\\n2.If bio needs to be throttled, it will start the timer and\\nstop submit bio directly. Bio will submit in\\nblk_throtl_dispatch_work_fn() when the timer expires.But in\\nthe current process, if bio is throttled. The BIO_THROTTLED\\nwill be set to bio after timer start. If the bio has been\\ncompleted, it may cause use-after-free blow.\\n\\nBUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70\\nRead of size 2 at addr ffff88801b8902d4 by task fio/26380\\n\\n dump_stack+0x9b/0xce\\n print_address_description.constprop.6+0x3e/0x60\\n kasan_report.cold.9+0x22/0x3a\\n blk_throtl_bio+0x12f0/0x2c70\\n submit_bio_checks+0x701/0x1550\\n submit_bio_noacct+0x83/0xc80\\n submit_bio+0xa7/0x330\\n mpage_readahead+0x380/0x500\\n read_pages+0x1c1/0xbf0\\n page_cache_ra_unbounded+0x471/0x6f0\\n do_page_cache_ra+0xda/0x110\\n ondemand_readahead+0x442/0xae0\\n page_cache_async_ra+0x210/0x300\\n generic_file_buffered_read+0x4d9/0x2130\\n generic_file_read_iter+0x315/0x490\\n blkdev_read_iter+0x113/0x1b0\\n aio_read+0x2ad/0x450\\n io_submit_one+0xc8e/0x1d60\\n __se_sys_io_submit+0x125/0x350\\n do_syscall_64+0x2d/0x40\\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\\n\\nAllocated by task 26380:\\n kasan_save_stack+0x19/0x40\\n __kasan_kmalloc.constprop.2+0xc1/0xd0\\n kmem_cache_alloc+0x146/0x440\\n mempool_alloc+0x125/0x2f0\\n bio_alloc_bioset+0x353/0x590\\n mpage_alloc+0x3b/0x240\\n do_mpage_readpage+0xddf/0x1ef0\\n mpage_readahead+0x264/0x500\\n read_pages+0x1c1/0xbf0\\n page_cache_ra_unbounded+0x471/0x6f0\\n do_page_cache_ra+0xda/0x110\\n ondemand_readahead+0x442/0xae0\\n page_cache_async_ra+0x210/0x300\\n generic_file_buffered_read+0x4d9/0x2130\\n generic_file_read_iter+0x315/0x490\\n blkdev_read_iter+0x113/0x1b0\\n aio_read+0x2ad/0x450\\n io_submit_one+0xc8e/0x1d60\\n __se_sys_io_submit+0x125/0x350\\n do_syscall_64+0x2d/0x40\\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\\n\\nFreed by task 0:\\n kasan_save_stack+0x19/0x40\\n kasan_set_track+0x1c/0x30\\n kasan_set_free_info+0x1b/0x30\\n __kasan_slab_free+0x111/0x160\\n kmem_cache_free+0x94/0x460\\n mempool_free+0xd6/0x320\\n bio_free+0xe0/0x130\\n bio_put+0xab/0xe0\\n bio_endio+0x3a6/0x5d0\\n blk_update_request+0x590/0x1370\\n scsi_end_request+0x7d/0x400\\n scsi_io_completion+0x1aa/0xe50\\n scsi_softirq_done+0x11b/0x240\\n blk_mq_complete_request+0xd4/0x120\\n scsi_mq_done+0xf0/0x200\\n virtscsi_vq_done+0xbc/0x150\\n vring_interrupt+0x179/0x390\\n __handle_irq_event_percpu+0xf7/0x490\\n handle_irq_event_percpu+0x7b/0x160\\n handle_irq_event+0xcc/0x170\\n handle_edge_irq+0x215/0xb20\\n common_interrupt+0x60/0x120\\n asm_common_interrupt+0x1e/0x40\\n\\nFix this by move BIO_THROTTLED set into the queue_lock.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.248\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.198\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.14\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"3.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-19T12:17:39.645Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49465\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-19T12:17:39.645Z\", \"dateReserved\": \"2025-02-26T02:08:31.577Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:13:10.975Z\", \"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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • 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.