cve-2024-53166
Vulnerability from cvelistv5
Published
2024-12-27 13:49
Modified
2024-12-27 13:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix bfqq uaf in bfq_limit_depth() Set new allocated bfqq to bic or remove freed bfqq from bic are both protected by bfqd->lock, however bfq_limit_depth() is deferencing bfqq from bic without the lock, this can lead to UAF if the io_context is shared by multiple tasks. For example, test bfq with io_uring can trigger following UAF in v6.6: ================================================================== BUG: KASAN: slab-use-after-free in bfqq_group+0x15/0x50 Call Trace: <TASK> dump_stack_lvl+0x47/0x80 print_address_description.constprop.0+0x66/0x300 print_report+0x3e/0x70 kasan_report+0xb4/0xf0 bfqq_group+0x15/0x50 bfqq_request_over_limit+0x130/0x9a0 bfq_limit_depth+0x1b5/0x480 __blk_mq_alloc_requests+0x2b5/0xa00 blk_mq_get_new_requests+0x11d/0x1d0 blk_mq_submit_bio+0x286/0xb00 submit_bio_noacct_nocheck+0x331/0x400 __block_write_full_folio+0x3d0/0x640 writepage_cb+0x3b/0xc0 write_cache_pages+0x254/0x6c0 write_cache_pages+0x254/0x6c0 do_writepages+0x192/0x310 filemap_fdatawrite_wbc+0x95/0xc0 __filemap_fdatawrite_range+0x99/0xd0 filemap_write_and_wait_range.part.0+0x4d/0xa0 blkdev_read_iter+0xef/0x1e0 io_read+0x1b6/0x8a0 io_issue_sqe+0x87/0x300 io_wq_submit_work+0xeb/0x390 io_worker_handle_work+0x24d/0x550 io_wq_worker+0x27f/0x6c0 ret_from_fork_asm+0x1b/0x30 </TASK> Allocated by task 808602: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_slab_alloc+0x83/0x90 kmem_cache_alloc_node+0x1b1/0x6d0 bfq_get_queue+0x138/0xfa0 bfq_get_bfqq_handle_split+0xe3/0x2c0 bfq_init_rq+0x196/0xbb0 bfq_insert_request.isra.0+0xb5/0x480 bfq_insert_requests+0x156/0x180 blk_mq_insert_request+0x15d/0x440 blk_mq_submit_bio+0x8a4/0xb00 submit_bio_noacct_nocheck+0x331/0x400 __blkdev_direct_IO_async+0x2dd/0x330 blkdev_write_iter+0x39a/0x450 io_write+0x22a/0x840 io_issue_sqe+0x87/0x300 io_wq_submit_work+0xeb/0x390 io_worker_handle_work+0x24d/0x550 io_wq_worker+0x27f/0x6c0 ret_from_fork+0x2d/0x50 ret_from_fork_asm+0x1b/0x30 Freed by task 808589: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 __kasan_slab_free+0x126/0x1b0 kmem_cache_free+0x10c/0x750 bfq_put_queue+0x2dd/0x770 __bfq_insert_request.isra.0+0x155/0x7a0 bfq_insert_request.isra.0+0x122/0x480 bfq_insert_requests+0x156/0x180 blk_mq_dispatch_plug_list+0x528/0x7e0 blk_mq_flush_plug_list.part.0+0xe5/0x590 __blk_flush_plug+0x3b/0x90 blk_finish_plug+0x40/0x60 do_writepages+0x19d/0x310 filemap_fdatawrite_wbc+0x95/0xc0 __filemap_fdatawrite_range+0x99/0xd0 filemap_write_and_wait_range.part.0+0x4d/0xa0 blkdev_read_iter+0xef/0x1e0 io_read+0x1b6/0x8a0 io_issue_sqe+0x87/0x300 io_wq_submit_work+0xeb/0x390 io_worker_handle_work+0x24d/0x550 io_wq_worker+0x27f/0x6c0 ret_from_fork+0x2d/0x50 ret_from_fork_asm+0x1b/0x30 Fix the problem by protecting bic_to_bfqq() with bfqd->lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01a853faaeaf3379ccf358ade582b1d28752126e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/906cdbdd3b018ff69cc830173bce277a847d4fdc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dcaa738afde55085ac6056252e319479cf23cde2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8b8344de3980709080d86c157d24e7de07d70ad
Impacted products
Vendor Product Version
Linux Linux Version: 5.17
Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/bfq-iosched.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "906cdbdd3b018ff69cc830173bce277a847d4fdc",
              "status": "affected",
              "version": "76f1df88bbc2f984eb0418cc90de0a8384e63604",
              "versionType": "git"
            },
            {
              "lessThan": "dcaa738afde55085ac6056252e319479cf23cde2",
              "status": "affected",
              "version": "76f1df88bbc2f984eb0418cc90de0a8384e63604",
              "versionType": "git"
            },
            {
              "lessThan": "01a853faaeaf3379ccf358ade582b1d28752126e",
              "status": "affected",
              "version": "76f1df88bbc2f984eb0418cc90de0a8384e63604",
              "versionType": "git"
            },
            {
              "lessThan": "e8b8344de3980709080d86c157d24e7de07d70ad",
              "status": "affected",
              "version": "76f1df88bbc2f984eb0418cc90de0a8384e63604",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/bfq-iosched.c"
          ],
          "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": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix bfqq uaf in bfq_limit_depth()\n\nSet new allocated bfqq to bic or remove freed bfqq from bic are both\nprotected by bfqd-\u003elock, however bfq_limit_depth() is deferencing bfqq\nfrom bic without the lock, this can lead to UAF if the io_context is\nshared by multiple tasks.\n\nFor example, test bfq with io_uring can trigger following UAF in v6.6:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in bfqq_group+0x15/0x50\n\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x47/0x80\n print_address_description.constprop.0+0x66/0x300\n print_report+0x3e/0x70\n kasan_report+0xb4/0xf0\n bfqq_group+0x15/0x50\n bfqq_request_over_limit+0x130/0x9a0\n bfq_limit_depth+0x1b5/0x480\n __blk_mq_alloc_requests+0x2b5/0xa00\n blk_mq_get_new_requests+0x11d/0x1d0\n blk_mq_submit_bio+0x286/0xb00\n submit_bio_noacct_nocheck+0x331/0x400\n __block_write_full_folio+0x3d0/0x640\n writepage_cb+0x3b/0xc0\n write_cache_pages+0x254/0x6c0\n write_cache_pages+0x254/0x6c0\n do_writepages+0x192/0x310\n filemap_fdatawrite_wbc+0x95/0xc0\n __filemap_fdatawrite_range+0x99/0xd0\n filemap_write_and_wait_range.part.0+0x4d/0xa0\n blkdev_read_iter+0xef/0x1e0\n io_read+0x1b6/0x8a0\n io_issue_sqe+0x87/0x300\n io_wq_submit_work+0xeb/0x390\n io_worker_handle_work+0x24d/0x550\n io_wq_worker+0x27f/0x6c0\n ret_from_fork_asm+0x1b/0x30\n \u003c/TASK\u003e\n\nAllocated by task 808602:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n __kasan_slab_alloc+0x83/0x90\n kmem_cache_alloc_node+0x1b1/0x6d0\n bfq_get_queue+0x138/0xfa0\n bfq_get_bfqq_handle_split+0xe3/0x2c0\n bfq_init_rq+0x196/0xbb0\n bfq_insert_request.isra.0+0xb5/0x480\n bfq_insert_requests+0x156/0x180\n blk_mq_insert_request+0x15d/0x440\n blk_mq_submit_bio+0x8a4/0xb00\n submit_bio_noacct_nocheck+0x331/0x400\n __blkdev_direct_IO_async+0x2dd/0x330\n blkdev_write_iter+0x39a/0x450\n io_write+0x22a/0x840\n io_issue_sqe+0x87/0x300\n io_wq_submit_work+0xeb/0x390\n io_worker_handle_work+0x24d/0x550\n io_wq_worker+0x27f/0x6c0\n ret_from_fork+0x2d/0x50\n ret_from_fork_asm+0x1b/0x30\n\nFreed by task 808589:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_save_free_info+0x27/0x40\n __kasan_slab_free+0x126/0x1b0\n kmem_cache_free+0x10c/0x750\n bfq_put_queue+0x2dd/0x770\n __bfq_insert_request.isra.0+0x155/0x7a0\n bfq_insert_request.isra.0+0x122/0x480\n bfq_insert_requests+0x156/0x180\n blk_mq_dispatch_plug_list+0x528/0x7e0\n blk_mq_flush_plug_list.part.0+0xe5/0x590\n __blk_flush_plug+0x3b/0x90\n blk_finish_plug+0x40/0x60\n do_writepages+0x19d/0x310\n filemap_fdatawrite_wbc+0x95/0xc0\n __filemap_fdatawrite_range+0x99/0xd0\n filemap_write_and_wait_range.part.0+0x4d/0xa0\n blkdev_read_iter+0xef/0x1e0\n io_read+0x1b6/0x8a0\n io_issue_sqe+0x87/0x300\n io_wq_submit_work+0xeb/0x390\n io_worker_handle_work+0x24d/0x550\n io_wq_worker+0x27f/0x6c0\n ret_from_fork+0x2d/0x50\n ret_from_fork_asm+0x1b/0x30\n\nFix the problem by protecting bic_to_bfqq() with bfqd-\u003elock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-27T13:49:12.233Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/906cdbdd3b018ff69cc830173bce277a847d4fdc"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcaa738afde55085ac6056252e319479cf23cde2"
        },
        {
          "url": "https://git.kernel.org/stable/c/01a853faaeaf3379ccf358ade582b1d28752126e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8b8344de3980709080d86c157d24e7de07d70ad"
        }
      ],
      "title": "block, bfq: fix bfqq uaf in bfq_limit_depth()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53166",
    "datePublished": "2024-12-27T13:49:12.233Z",
    "dateReserved": "2024-11-19T17:17:25.005Z",
    "dateUpdated": "2024-12-27T13:49:12.233Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53166\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T14:15:23.703\",\"lastModified\":\"2024-12-27T14:15:23.703\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblock, bfq: fix bfqq uaf in bfq_limit_depth()\\n\\nSet new allocated bfqq to bic or remove freed bfqq from bic are both\\nprotected by bfqd-\u003elock, however bfq_limit_depth() is deferencing bfqq\\nfrom bic without the lock, this can lead to UAF if the io_context is\\nshared by multiple tasks.\\n\\nFor example, test bfq with io_uring can trigger following UAF in v6.6:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in bfqq_group+0x15/0x50\\n\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x47/0x80\\n print_address_description.constprop.0+0x66/0x300\\n print_report+0x3e/0x70\\n kasan_report+0xb4/0xf0\\n bfqq_group+0x15/0x50\\n bfqq_request_over_limit+0x130/0x9a0\\n bfq_limit_depth+0x1b5/0x480\\n __blk_mq_alloc_requests+0x2b5/0xa00\\n blk_mq_get_new_requests+0x11d/0x1d0\\n blk_mq_submit_bio+0x286/0xb00\\n submit_bio_noacct_nocheck+0x331/0x400\\n __block_write_full_folio+0x3d0/0x640\\n writepage_cb+0x3b/0xc0\\n write_cache_pages+0x254/0x6c0\\n write_cache_pages+0x254/0x6c0\\n do_writepages+0x192/0x310\\n filemap_fdatawrite_wbc+0x95/0xc0\\n __filemap_fdatawrite_range+0x99/0xd0\\n filemap_write_and_wait_range.part.0+0x4d/0xa0\\n blkdev_read_iter+0xef/0x1e0\\n io_read+0x1b6/0x8a0\\n io_issue_sqe+0x87/0x300\\n io_wq_submit_work+0xeb/0x390\\n io_worker_handle_work+0x24d/0x550\\n io_wq_worker+0x27f/0x6c0\\n ret_from_fork_asm+0x1b/0x30\\n \u003c/TASK\u003e\\n\\nAllocated by task 808602:\\n kasan_save_stack+0x1e/0x40\\n kasan_set_track+0x21/0x30\\n __kasan_slab_alloc+0x83/0x90\\n kmem_cache_alloc_node+0x1b1/0x6d0\\n bfq_get_queue+0x138/0xfa0\\n bfq_get_bfqq_handle_split+0xe3/0x2c0\\n bfq_init_rq+0x196/0xbb0\\n bfq_insert_request.isra.0+0xb5/0x480\\n bfq_insert_requests+0x156/0x180\\n blk_mq_insert_request+0x15d/0x440\\n blk_mq_submit_bio+0x8a4/0xb00\\n submit_bio_noacct_nocheck+0x331/0x400\\n __blkdev_direct_IO_async+0x2dd/0x330\\n blkdev_write_iter+0x39a/0x450\\n io_write+0x22a/0x840\\n io_issue_sqe+0x87/0x300\\n io_wq_submit_work+0xeb/0x390\\n io_worker_handle_work+0x24d/0x550\\n io_wq_worker+0x27f/0x6c0\\n ret_from_fork+0x2d/0x50\\n ret_from_fork_asm+0x1b/0x30\\n\\nFreed by task 808589:\\n kasan_save_stack+0x1e/0x40\\n kasan_set_track+0x21/0x30\\n kasan_save_free_info+0x27/0x40\\n __kasan_slab_free+0x126/0x1b0\\n kmem_cache_free+0x10c/0x750\\n bfq_put_queue+0x2dd/0x770\\n __bfq_insert_request.isra.0+0x155/0x7a0\\n bfq_insert_request.isra.0+0x122/0x480\\n bfq_insert_requests+0x156/0x180\\n blk_mq_dispatch_plug_list+0x528/0x7e0\\n blk_mq_flush_plug_list.part.0+0xe5/0x590\\n __blk_flush_plug+0x3b/0x90\\n blk_finish_plug+0x40/0x60\\n do_writepages+0x19d/0x310\\n filemap_fdatawrite_wbc+0x95/0xc0\\n __filemap_fdatawrite_range+0x99/0xd0\\n filemap_write_and_wait_range.part.0+0x4d/0xa0\\n blkdev_read_iter+0xef/0x1e0\\n io_read+0x1b6/0x8a0\\n io_issue_sqe+0x87/0x300\\n io_wq_submit_work+0xeb/0x390\\n io_worker_handle_work+0x24d/0x550\\n io_wq_worker+0x27f/0x6c0\\n ret_from_fork+0x2d/0x50\\n ret_from_fork_asm+0x1b/0x30\\n\\nFix the problem by protecting bic_to_bfqq() with bfqd-\u003elock.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01a853faaeaf3379ccf358ade582b1d28752126e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/906cdbdd3b018ff69cc830173bce277a847d4fdc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dcaa738afde55085ac6056252e319479cf23cde2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e8b8344de3980709080d86c157d24e7de07d70ad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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