ghsa-xp9j-268q-p7q6
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2022-49465"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:22Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-xp9j-268q-p7q6",
"modified": "2025-02-27T21:32:14Z",
"published": "2025-02-27T21:32:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49465"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0cfc8a0fb07cde61915e4a77c4794c47de3114a4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5a011f889b4832aa80c2a872a5aade5c48d2756f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/935fa666534d7b7185e8c6b0191cd06281be4290"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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