[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2024-53166":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T14:53:31.930Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":21,"related":22,"reserved_at":9,"published_at":23,"modified_at":24,"state":9,"summary":25,"references_raw":27,"kevs":34,"epss":9,"epss_history":35,"metrics":36,"affected":43},"DEBIAN-CVE-2024-53166","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:  \u003CTASK>  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  \u003C/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.",null,[],[],[],[14],{"_key":15},"CVE-2024-53166",[17,19],{"_key":18},"DLA-4193-1",{"_key":20},"DSA-5900-1",[],[],"2024-12-27T14:15:23.703Z","2026-04-28T20:29:00.160171Z",{"cisa_kev":26,"cisa_ransomware":26,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[28],{"url":29,"sources":30,"tags":32},"https://security-tracker.debian.org/tracker/CVE-2024-53166",[31],"osv_debian",[33],"Advisory",[],[],[37],{"source":31,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":38,"cvss_v4_0":9},{"baseScore":39,"baseSeverity":9,"vectorString":40,"impactScore":41,"exploitabilityScore":42},7.8,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",9.8,4.6,[44,60],{"ecosystem":45,"name":46,"vendor":47,"product":46,"cpe_part":9,"purl_type":48,"purl_namespace":47,"purl_name":46,"source":9,"versions":49},"Debian","linux","debian","deb",[50,56,59],{"version":51,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":55,"fixed_in":9},"lt6_1_133_1",true,"ecosystem","6.1.133-1","excluding",{"version":57,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":58,"version_end_type":55,"fixed_in":9},"lt6_12_3_1","6.12.3-1",{"version":57,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":58,"version_end_type":55,"fixed_in":9},{"ecosystem":45,"name":61,"vendor":47,"product":61,"cpe_part":9,"purl_type":48,"purl_namespace":47,"purl_name":61,"source":9,"versions":62},"linux-6.1",[63],{"version":64,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":65,"version_end_type":55,"fixed_in":9},"lt6_1_137_1~deb11u1","6.1.137-1~deb11u1"]